diff --git a/.gitignore b/.gitignore
index b022725..c6032c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,4 +7,5 @@
 *.pyc
 freedev.code-workspace
 .idea/
-.pytest_cache/
\ No newline at end of file
+.pytest_cache/
+CLAUDE.md
diff --git a/apps/devops/Dockerfile b/apps/devops/Dockerfile
new file mode 100644
index 0000000..1d96106
--- /dev/null
+++ b/apps/devops/Dockerfile
@@ -0,0 +1,31 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements and install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Set environment variables
+ENV LOG_BASE_PATH=/app/log/devsvc
+
+# Create necessary directories
+RUN mkdir -p /app/log/devops
+
+# Expose port
+EXPOSE 8014
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8014/api/_/healthz || exit 1
+
+# Start the application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8014", "--reload"] 
\ No newline at end of file
diff --git a/apps/devops/README.md b/apps/devops/README.md
new file mode 100644
index 0000000..2fb84b3
--- /dev/null
+++ b/apps/devops/README.md
@@ -0,0 +1,20 @@
+This is a template backend service based on fastapi + mongodb app
+
+To start development in local, go to the root directory of the project YOUR_WORKSPACE_PATH/helloworld/
+```bash
+docker compose -f app/scripts/mongodb/docker-compose.yml up -d
+```
+
+Then run the app
+```bash
+uvicorn app.main:app --reload
+```
+
+In case a new dependency is added, run the following command to update the requirements.txt file
+```bash
+# optional: if you have not installed pipreqs
+pip3 install pipreqs
+
+# generate requirements.txt
+pipreqs . --force
+```
diff --git a/apps/devops/app/__init__.py b/apps/devops/app/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/backend/infra/rabbitmq/__init__.py b/apps/devops/app/backend/infra/rabbitmq/__init__.py
new file mode 100644
index 0000000..881d42a
--- /dev/null
+++ b/apps/devops/app/backend/infra/rabbitmq/__init__.py
@@ -0,0 +1 @@
+# RabbitMQ infrastructure for DevOps service
\ No newline at end of file
diff --git a/apps/devops/app/backend/infra/rabbitmq/async_client.py b/apps/devops/app/backend/infra/rabbitmq/async_client.py
new file mode 100644
index 0000000..39e9f28
--- /dev/null
+++ b/apps/devops/app/backend/infra/rabbitmq/async_client.py
@@ -0,0 +1,66 @@
+from app.common.config.app_settings import app_settings
+from app.common.log.module_logger import ModuleLogger
+import asyncio
+from asyncio import AbstractEventLoop
+import aio_pika
+
+
+class AsyncMQClient:
+    exchange_name_format = "freeleaps.devops.exchange.{}"
+    exchange_type = "direct"
+
+    def __init__(self, channel_name: str) -> None:
+        self.exchange_name_format = AsyncMQClient.exchange_name_format
+        self.channel_name = channel_name
+        self.exchange_type = AsyncMQClient.exchange_type
+        self.exchange_name = self.exchange_name_format.format(self.channel_name)
+        self.process_callable = None
+        self.routing_key = self.channel_name
+        self.module_logger = ModuleLogger(sender_id="AsyncMQClient")
+
+    async def bind(self, max_retries=10, event_loop: AbstractEventLoop = None):
+        retry_count = 0
+        retry_interval = 1
+
+        while retry_count < max_retries:
+            try:
+                self.connection = await aio_pika.connect_robust(
+                    host=app_settings.RABBITMQ_HOST,
+                    port=int(app_settings.RABBITMQ_PORT),
+                    login=app_settings.RABBITMQ_USERNAME,
+                    password=app_settings.RABBITMQ_PASSWORD,
+                    virtualhost=app_settings.RABBITMQ_VIRTUAL_HOST,
+                    loop=event_loop,
+                )
+                self.channel = await self.connection.channel()
+                self.exchange = await self.channel.declare_exchange(
+                    name=self.exchange_name, type="direct", auto_delete=False
+                )
+
+                # Connect to existing named queue instead of creating anonymous queue
+                # channel_name already contains the full queue name from environment variable
+                self.queue = await self.channel.declare_queue(
+                    name=self.channel_name, exclusive=False, auto_delete=False, durable=True
+                )
+                await self.queue.bind(
+                    exchange=self.exchange, routing_key=self.routing_key
+                )
+                break
+            except Exception as e:
+                await self.module_logger.log_exception(
+                    exception=e,
+                    text=f"Reconnection attempt {retry_count + 1}/{max_retries} failed: {e}",
+                )
+                await asyncio.sleep(retry_interval)
+                retry_interval = min(retry_interval * 2, 60)
+                retry_count += 1
+
+        if retry_count >= max_retries:
+            raise ConnectionError(
+                "Unable to connect to RabbitMQ after multiple retries."
+            )
+
+    async def close(self):
+        """Unbind the queue and close the connection gracefully."""
+        await self.queue.unbind(self.exchange, self.routing_key)
+        await self.connection.close()
\ No newline at end of file
diff --git a/apps/devops/app/backend/infra/rabbitmq/async_subscriber.py b/apps/devops/app/backend/infra/rabbitmq/async_subscriber.py
new file mode 100644
index 0000000..05ef7e4
--- /dev/null
+++ b/apps/devops/app/backend/infra/rabbitmq/async_subscriber.py
@@ -0,0 +1,84 @@
+from asyncio import AbstractEventLoop
+from app.common.log.module_logger import ModuleLogger
+import json
+import asyncio
+from .async_client import AsyncMQClient
+
+
+class AsyncMQSubscriber(AsyncMQClient):
+    def __init__(self, channel_name: str) -> None:
+        super().__init__(channel_name=channel_name)
+        self.process_callable = None
+        self.routing_key = self.channel_name
+        self.consumer_callbacks = {}
+        self.consumer_callbacks_lock = asyncio.Lock()
+        self.module_logger = ModuleLogger(sender_id="AsyncMQSubscriber")
+
+    async def process_incoming_message(self, message):
+        """Processing incoming message from RabbitMQ"""
+        await message.ack()
+        body = message.body
+        if body:
+            async with self.consumer_callbacks_lock:
+                for registry_key, callback_info in self.consumer_callbacks.items():
+                    try:
+                        await callback_info["method"](
+                            registry_key, json.loads(body), callback_info["args"]
+                        )
+                    except Exception as err:
+                        await self.module_logger.log_exception(
+                            exception=err,
+                            text=f"Error processing message for consumer '{registry_key}'",
+                        )
+
+    async def subscribe(self, max_retries=10, event_loop: AbstractEventLoop = None):
+        """Attempts to bind and consume messages, with retry mechanism."""
+        retries = 0
+        while retries < max_retries:
+            try:
+                await self.bind(max_retries=5, event_loop=event_loop)
+                await self.queue.consume(
+                    no_ack=False, exclusive=True, callback=self.process_incoming_message
+                )
+                break
+            except Exception as e:
+                await self.module_logger.log_exception(
+                    exception=e,
+                    text=f"Failed to subscribe at {retries} time, will retry",
+                )
+                retries += 1
+                await asyncio.sleep(5)
+        else:
+            await self.module_logger.log_exception(
+                exception=ConnectionError(
+                    f"Exceeded max retries ({max_retries}) for subscription."
+                ),
+                text=f"Subscription failed for {self.channel_name} after {max_retries} attempts.",
+            )
+
+    async def register_consumer(
+        self,
+        registry_key: str,
+        callback_method,
+        args: dict,
+    ):
+        """Register a consumer callback with a unique key."""
+        async with self.consumer_callbacks_lock:
+            self.consumer_callbacks[registry_key] = {
+                "method": callback_method,
+                "args": args,
+            }
+
+    async def unregister_consumer(
+        self,
+        registry_key: str,
+    ):
+        """Unregister a consumer callback by its key."""
+        async with self.consumer_callbacks_lock:
+            if registry_key in self.consumer_callbacks:
+                del self.consumer_callbacks[registry_key]
+
+    async def clear_all_consumers(self):
+        """Unregister all consumer callbacks."""
+        async with self.consumer_callbacks_lock:
+            self.consumer_callbacks.clear()
\ No newline at end of file
diff --git a/apps/devops/app/backend/services/deployment_status_update_service.py b/apps/devops/app/backend/services/deployment_status_update_service.py
new file mode 100644
index 0000000..2dfa53a
--- /dev/null
+++ b/apps/devops/app/backend/services/deployment_status_update_service.py
@@ -0,0 +1,100 @@
+from datetime import datetime
+from typing import Dict, Literal
+from app.common.log.module_logger import ModuleLogger
+from app.common.models.deployment.deployment import Deployment
+from app.common.models.deployment.heartbeat import DevOpsReconcileJobHeartbeatMessage
+
+
+class DeploymentStatusUpdateService:
+    def __init__(self):
+        self.module_logger = ModuleLogger(sender_id="DeploymentStatusUpdateService")
+        
+        # Status mapping from heartbeat to deployment model
+        self.status_mapping: Dict[str, Literal["started", "failed", "succeeded", "aborted"]] = {
+            "running": "started",
+            "success": "succeeded", 
+            "failed": "failed",
+            "terminated": "aborted"
+        }
+        
+        # Phase to stage mapping for more detailed tracking
+        self.phase_to_stage_mapping: Dict[str, str] = {
+            "initializing": "initialization",
+            "jenkins_build": "build",
+            "building": "build", 
+            "deploying": "deployment",
+            "finished": "completed"
+        }
+
+    async def process_heartbeat_message(self, registry_key: str, message_data: dict, args: dict):
+        """Process incoming heartbeat message and update deployment status"""
+        # registry_key and args are provided by the message queue framework but not used in this implementation
+        _ = registry_key, args
+        try:
+            # Parse the message using our Pydantic model
+            heartbeat_message = DevOpsReconcileJobHeartbeatMessage(**message_data)
+            payload = heartbeat_message.payload
+            
+            await self.module_logger.log_info(
+                text=f"Processing heartbeat for deployment {payload.id}: {payload.status} - {payload.phase}",
+                data={"deployment_id": payload.id, "status": payload.status, "phase": payload.phase}
+            )
+            
+            # Find the deployment by ID
+            deployment = await Deployment.find_one(Deployment.deployment_id == payload.id)
+            if not deployment:
+                await self.module_logger.log_warning(
+                    text=f"Deployment not found: {payload.id}",
+                    data={"deployment_id": payload.id}
+                )
+                return
+            
+            # Map heartbeat status to deployment status
+            if payload.status in self.status_mapping:
+                deployment.deployment_status = self.status_mapping[payload.status]
+            else:
+                await self.module_logger.log_warning(
+                    text=f"Unknown status received: {payload.status}",
+                    data={"deployment_id": payload.id, "status": payload.status}
+                )
+                return
+            
+            # Map phase to deployment stage
+            if payload.phase in self.phase_to_stage_mapping:
+                deployment.deployment_stage = self.phase_to_stage_mapping[payload.phase]
+            else:
+                deployment.deployment_stage = payload.phase
+            
+            # Update app URL if provided and deployment is successful
+            if payload.url and payload.status == "success":
+                deployment.deployment_app_url = payload.url
+            
+            # Update timestamp
+            deployment.updated_at = datetime.now()
+            
+            # Save the updated deployment
+            await deployment.save()
+            
+            await self.module_logger.log_info(
+                text=f"Updated deployment {payload.id}: status={deployment.deployment_status}, stage={deployment.deployment_stage}",
+                data={
+                    "deployment_id": payload.id,
+                    "status": deployment.deployment_status,
+                    "stage": deployment.deployment_stage,
+                    "app_url": deployment.deployment_app_url,
+                    "error": payload.error
+                }
+            )
+            
+            # Log errors if present
+            if payload.error:
+                await self.module_logger.log_error(
+                    text=f"Deployment {payload.id} failed: {payload.error}",
+                    data={"deployment_id": payload.id, "error": payload.error, "phase": payload.phase}
+                )
+            
+        except Exception as e:
+            await self.module_logger.log_exception(
+                exception=e,
+                text=f"Error processing heartbeat message: {message_data}",
+            )
\ No newline at end of file
diff --git a/apps/devops/app/bootstrap/__init__.py b/apps/devops/app/bootstrap/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/bootstrap/application.py b/apps/devops/app/bootstrap/application.py
new file mode 100644
index 0000000..3cf635b
--- /dev/null
+++ b/apps/devops/app/bootstrap/application.py
@@ -0,0 +1,83 @@
+import logging
+from fastapi import FastAPI
+from fastapi.openapi.utils import get_openapi
+
+from app.providers import common
+from app.providers.logger import register_logger
+from app.providers import router
+from app.providers import database
+from app.providers import metrics
+from app.providers import probes
+from app.providers import exception_handler
+from app.providers import message_queue
+from app.common.config.app_settings import app_settings
+
+def create_app() -> FastAPI:
+    logging.info("App initializing")
+
+    app = FreeleapsApp()
+
+    register_logger()
+    register(app, exception_handler)
+    register(app, database)
+    register(app, router)
+    register(app, common)
+    register(app, message_queue)
+
+    # Call the custom_openapi function to change the OpenAPI version
+    customize_openapi_security(app)
+    # Register probe APIs if enabled
+    if app_settings.PROBES_ENABLED:
+        register(app, probes)
+    
+    # Register metrics APIs if enabled
+    if app_settings.METRICS_ENABLED:
+        register(app, metrics)
+    return app
+
+
+# This function overrides the OpenAPI schema version to 3.0.0
+def customize_openapi_security(app: FastAPI) -> None:
+
+    def custom_openapi():
+        if app.openapi_schema:
+            return app.openapi_schema
+
+        # Generate OpenAPI schema
+        openapi_schema = get_openapi(
+            title="FreeLeaps API",
+            version="3.1.0",
+            description="FreeLeaps API Documentation",
+            routes=app.routes,
+        )
+
+        # Ensure the components section exists in the OpenAPI schema
+        if "components" not in openapi_schema:
+            openapi_schema["components"] = {}
+
+        # Add security scheme to components
+        openapi_schema["components"]["securitySchemes"] = {
+            "bearerAuth": {"type": "http", "scheme": "bearer", "bearerFormat": "JWT"}
+        }
+
+        # Add security requirement globally
+        openapi_schema["security"] = [{"bearerAuth": []}]
+
+        app.openapi_schema = openapi_schema
+        return app.openapi_schema
+
+    app.openapi = custom_openapi
+
+
+def register(app, provider):
+    logging.info(provider.__name__ + " registering")
+    provider.register(app)
+
+
+def boot(app, provider):
+    logging.info(provider.__name__ + " booting")
+    provider.boot(app)
+
+class FreeleapsApp(FastAPI):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
diff --git a/apps/devops/app/common/__init__.py b/apps/devops/app/common/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/common/config/__init__.py b/apps/devops/app/common/config/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/common/config/app_settings.py b/apps/devops/app/common/config/app_settings.py
new file mode 100644
index 0000000..d7b3c7d
--- /dev/null
+++ b/apps/devops/app/common/config/app_settings.py
@@ -0,0 +1,35 @@
+from pydantic_settings import BaseSettings
+
+# NOTE: The values fall backs to your environment variables when not set here
+class AppSettings(BaseSettings):
+    NAME: str = "YOUR_APP_NAME"
+    APP_NAME: str = NAME
+    APP_ENV: str = "alpha"
+
+    JWT_SECRET_KEY: str = ""
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 3600
+    REFRESH_TOKEN_EXPIRE_DAYS: int = 1
+
+    METRICS_ENABLED: bool = False
+    PROBES_ENABLED: bool = True
+
+    APP_MONGODB_URI: str = "mongodb://localhost:27017"
+    APP_MONGODB_NAME: str = "testdb"
+
+    LOG_BASE_PATH: str = "./log"
+    BACKEND_LOG_FILE_NAME: str = APP_NAME
+    APPLICATION_ACTIVITY_LOG: str = APP_NAME + "-application-activity"\
+    
+    RABBITMQ_HOST: str = "localhost"
+    RABBITMQ_PORT: int = 5672
+    RABBITMQ_USERNAME: str = "guest"
+    RABBITMQ_PASSWORD: str = "guest"
+    RABBITMQ_VIRTUAL_HOST: str = "/"
+
+
+    class Config:
+        env_file = ".myapp.env"
+        env_file_encoding = "utf-8"
+
+
+app_settings = AppSettings()
diff --git a/apps/devops/app/common/config/log_settings.py b/apps/devops/app/common/config/log_settings.py
new file mode 100644
index 0000000..2f6985c
--- /dev/null
+++ b/apps/devops/app/common/config/log_settings.py
@@ -0,0 +1,16 @@
+import os
+from dataclasses import dataclass
+from .app_settings import app_settings
+
+@dataclass
+class LogSettings:
+    LOG_PATH_BASE: str = app_settings.LOG_BASE_PATH
+    LOG_RETENTION: str = os.environ.get("LOG_RETENTION", "30 days")
+    LOG_ROTATION: str = os.environ.get("LOG_ROTATION", "00:00")  # midnight
+    MAX_BACKUP_FILES: int = int(os.environ.get("LOG_BACKUP_FILES", 5))
+    LOG_ROTATION_BYTES: int = int(os.environ.get("LOG_ROTATION_BYTES", 10 * 1024 * 1024))  # 10 MB
+    APP_NAME: str = app_settings.APP_NAME
+    ENVIRONMENT: str = app_settings.APP_ENV
+
+
+log_settings = LogSettings()
diff --git a/apps/devops/app/common/config/site_settings.py b/apps/devops/app/common/config/site_settings.py
new file mode 100644
index 0000000..0bf92eb
--- /dev/null
+++ b/apps/devops/app/common/config/site_settings.py
@@ -0,0 +1,35 @@
+import os
+
+from pydantic_settings import BaseSettings
+
+
+# NOTE: The values fall backs to your environment variables when not set here
+class SiteSettings(BaseSettings):
+    NAME: str = "appname"
+    DEBUG: bool = True
+
+    ENV: str = "dev"
+
+    SERVER_HOST: str = "localhost"
+    SERVER_PORT: int = 8000
+
+    URL: str = "http://localhost"
+    TIME_ZONE: str = "UTC"
+
+    BASE_PATH: str = os.path.dirname(os.path.dirname((os.path.abspath(__file__))))
+
+    BASE_GITEA_URL: str = "https://gitea.freeleaps.mathmast.com"
+
+    # TODO: confirm with Zhenyu
+    BASE_RECONCILE_URL: str = "https://reconcile.freeleaps.mathmast.com"
+
+    # TODO: modify this with actual Loki URL
+    BASE_LOKI_URL: str = "http://localhost:3100"
+
+    class Config:
+        env_file = ".devbase-webapi.env"
+        env_file_encoding = "utf-8"
+
+
+site_settings = SiteSettings()
+
diff --git a/apps/devops/app/common/log/__init__.py b/apps/devops/app/common/log/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/common/log/application_logger.py b/apps/devops/app/common/log/application_logger.py
new file mode 100644
index 0000000..896c044
--- /dev/null
+++ b/apps/devops/app/common/log/application_logger.py
@@ -0,0 +1,12 @@
+from .base_logger import LoggerBase
+from app.common.config.app_settings import app_settings
+
+class ApplicationLogger(LoggerBase):
+    def __init__(self, application_activities: dict[str, any] = {}) -> None:
+        extra_fileds = {}
+        if application_activities:
+            extra_fileds.update(application_activities)
+        super().__init__(
+            logger_name=app_settings.APPLICATION_ACTIVITY_LOG,
+            extra_fileds=extra_fileds,
+        )
diff --git a/apps/devops/app/common/log/base_logger.py b/apps/devops/app/common/log/base_logger.py
new file mode 100644
index 0000000..a370296
--- /dev/null
+++ b/apps/devops/app/common/log/base_logger.py
@@ -0,0 +1,136 @@
+from loguru import logger as guru_logger
+from app.common.config.log_settings import log_settings
+from typing import Dict, Any, Optional
+import socket
+import json
+import threading
+import os
+import sys
+import inspect
+import logging
+
+from app.common.log.json_sink import JsonSink
+
+class LoggerBase:
+    binded_loggers = {}
+    logger_lock = threading.Lock()
+
+    def __init__(self, logger_name: str, extra_fileds: dict[str, any]) -> None:
+        self.__logger_name = logger_name
+        self.extra_fileds = extra_fileds
+        with LoggerBase.logger_lock:
+            if self.__logger_name in LoggerBase.binded_loggers:
+                self.logger = LoggerBase.binded_loggers[self.__logger_name]
+                return
+
+        log_filename = f"{log_settings.LOG_PATH_BASE}/{self.__logger_name}.log"
+        log_level = "INFO"
+        rotation_bytes = int(log_settings.LOG_ROTATION_BYTES or 10 * 1024 * 1024)
+
+        guru_logger.remove()
+
+        file_sink = JsonSink(
+            log_file_path=log_filename, 
+            rotation_size_bytes=rotation_bytes,
+            max_backup_files=log_settings.MAX_BACKUP_FILES
+            )
+        guru_logger.add(
+            sink=file_sink,
+            level=log_level,
+            filter=lambda record: record["extra"].get("topic") == self.__logger_name,
+        )
+
+        guru_logger.add(
+            sink=sys.stderr,
+            level=log_level,
+            format="{level} - {time:YYYY-MM-DD HH:mm:ss} - <{extra[log_file]}:{extra[log_line]}> - {extra[properties_str]} - {message}",
+            filter=lambda record: record["extra"].get("topic") == self.__logger_name,
+        )
+
+        host_name = socket.gethostname()
+        host_ip = socket.gethostbyname(host_name)
+        self.logger = guru_logger.bind(
+            topic=self.__logger_name,
+            host_ip=host_ip,
+            host_name=host_name,
+            app=log_settings.APP_NAME,
+            env=log_settings.ENVIRONMENT,
+        )
+        with LoggerBase.logger_lock:
+            LoggerBase.binded_loggers[self.__logger_name] = self.logger
+
+    def _get_log_context(self) -> dict:
+        frame = inspect.currentframe().f_back.f_back
+        filename = os.path.basename(frame.f_code.co_filename)
+        lineno = frame.f_lineno
+        return {"log_file": filename, "log_line": lineno}
+
+    def _prepare_properties(self, properties: Optional[Dict[str, Any]]) -> Dict[str, Any]:
+        props = {} if properties is None else properties.copy()
+        props_str = json.dumps(props, ensure_ascii=False) if props else "{}"
+        return props, props_str
+
+    async def log_event(self, sender_id: str, receiver_id: str, subject: str, event: str, properties: dict[str, any], text: str = "") -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event=event, properties=props, properties_str=props_str, **context)
+        local_logger.info(text)
+
+    async def log_exception(self, sender_id: str, receiver_id: str, subject: str, exception: Exception, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="exception", properties=props, properties_str=props_str, exception=exception, **context)
+        local_logger.exception(text)
+
+    async def log_info(self, sender_id: str, receiver_id: str, subject: str, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="information", properties=props, properties_str=props_str, **context)
+        local_logger.info(text)
+
+    async def log_warning(self, sender_id: str, receiver_id: str, subject: str, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="warning", properties=props, properties_str=props_str, **context)
+        local_logger.warning(text)
+
+    async def log_error(self, sender_id: str, receiver_id: str, subject: str, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="error", properties=props, properties_str=props_str, **context)
+        local_logger.error(text)
+
+    @staticmethod
+    def configure_uvicorn_logging():
+        print("📢 Setting up uvicorn logging interception...")
+
+        # Intercept logs from these loggers
+        intercept_loggers = ["uvicorn", "uvicorn.access", "uvicorn.error", "fastapi"]
+
+        class InterceptHandler(logging.Handler):
+            def emit(self, record):
+                level = (
+                    guru_logger.level(record.levelname).name
+                    if guru_logger.level(record.levelname, None)
+                    else record.levelno
+                )
+                frame, depth = logging.currentframe(), 2
+                while frame.f_code.co_filename == logging.__file__:
+                    frame = frame.f_back
+                    depth += 1
+
+                guru_logger.opt(depth=depth, exception=record.exc_info).log(
+                    level,
+                    f"[{record.name}] {record.getMessage()}",
+                )
+
+        # Replace default handlers
+        logging.root.handlers.clear()
+        logging.root.setLevel(logging.INFO)
+        logging.root.handlers = [InterceptHandler()]
+
+        # Configure specific uvicorn loggers
+        for logger_name in intercept_loggers:
+            logging_logger = logging.getLogger(logger_name)
+            logging_logger.handlers.clear()  # Remove default handlers
+            logging_logger.propagate = True  # Ensure propagation through Loguru
diff --git a/apps/devops/app/common/log/json_sink.py b/apps/devops/app/common/log/json_sink.py
new file mode 100644
index 0000000..a798156
--- /dev/null
+++ b/apps/devops/app/common/log/json_sink.py
@@ -0,0 +1,85 @@
+import json
+import datetime
+import traceback
+from pathlib import Path
+from typing import Optional
+
+class JsonSink:
+    def __init__(
+        self,
+        log_file_path: str,
+        rotation_size_bytes: int = 10 * 1024 * 1024,
+        max_backup_files: int = 5,
+    ):
+        self.log_file_path = Path(log_file_path)
+        self.rotation_size = rotation_size_bytes
+        self.max_backup_files = max_backup_files
+        self._open_log_file()
+
+    def _open_log_file(self):
+        # ensure the parent directory exists
+        parent_dir = self.log_file_path.parent
+        if not parent_dir.exists():
+            parent_dir.mkdir(parents=True, exist_ok=True)
+        self.log_file = self.log_file_path.open("a", encoding="utf-8")
+
+    def _should_rotate(self) -> bool:
+        return self.log_file_path.exists() and self.log_file_path.stat().st_size >= self.rotation_size
+
+    def _rotate(self):
+        self.log_file.close()
+        timestamp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
+        rotated_path = self.log_file_path.with_name(f"{self.log_file_path.stem}_{timestamp}{self.log_file_path.suffix}")
+        self.log_file_path.rename(rotated_path)
+        self._cleanup_old_backups()
+        self._open_log_file()
+
+    def _cleanup_old_backups(self):
+        parent = self.log_file_path.parent
+        stem = self.log_file_path.stem
+        suffix = self.log_file_path.suffix
+
+        backup_files = sorted(
+            parent.glob(f"{stem}_*{suffix}"),
+            key=lambda p: p.stat().st_mtime,
+            reverse=True,
+        )
+
+        for old_file in backup_files[self.max_backup_files:]:
+            try:
+                old_file.unlink()
+            except Exception as e:
+                print(f"Failed to delete old backup {old_file}: {e}")
+
+    def __call__(self, message):
+        record = message.record
+        if self._should_rotate():
+            self._rotate()
+
+        log_entry = {
+            "level": record["level"].name.lower(),
+            "timestamp": int(record["time"].timestamp() * 1000),
+            "text": record["message"],
+            "fields": record["extra"].get("properties", {}),
+            "context": {
+                "app": record["extra"].get("app"),
+                "env": record["extra"].get("env"),
+                "log_file": record["extra"].get("log_file"),
+                "log_line": record["extra"].get("log_line"),
+                "topic": record["extra"].get("topic"),
+                "sender_id": record["extra"].get("sender_id"),
+                "receiver_id": record["extra"].get("receiver_id"),
+                "subject": record["extra"].get("subject"),
+                "event": record["extra"].get("event"),
+                "host_ip": record["extra"].get("host_ip"),
+                "host_name": record["extra"].get("host_name"),
+            },
+            "stacktrace": None
+        }
+
+        if record["exception"]:
+            exc_type, exc_value, exc_tb = record["exception"]
+            log_entry["stacktrace"] = traceback.format_exception(exc_type, exc_value, exc_tb)
+
+        self.log_file.write(json.dumps(log_entry, ensure_ascii=False) + "\n")
+        self.log_file.flush()
diff --git a/apps/devops/app/common/log/module_logger.py b/apps/devops/app/common/log/module_logger.py
new file mode 100644
index 0000000..3e82f74
--- /dev/null
+++ b/apps/devops/app/common/log/module_logger.py
@@ -0,0 +1,46 @@
+from .application_logger import ApplicationLogger
+
+
+class ModuleLogger(ApplicationLogger):
+    def __init__(self, sender_id: str) -> None:
+        super().__init__()
+        self.event_sender_id = sender_id
+        self.event_receiver_id = "ModuleLogger"
+        self.event_subject = "module"
+
+    async def log_exception(self, exception: Exception, text: str = "Exception", properties: dict[str, any] = None) -> None:
+        return await super().log_exception(
+            sender_id=self.event_sender_id,
+            receiver_id=self.event_receiver_id,
+            subject=self.event_subject,
+            exception=exception,
+            text=text,
+            properties=properties,
+        )
+
+    async def log_info(self, text: str, data: dict[str, any] = None) -> None:
+        return await super().log_info(
+            sender_id=self.event_sender_id,
+            receiver_id=self.event_receiver_id,
+            subject=self.event_subject,
+            text=text,
+            properties=data,
+        )
+
+    async def log_warning(self, text: str, data: dict[str, any] = None) -> None:
+        return await super().log_warning(
+            sender_id=self.event_sender_id,
+            receiver_id=self.event_receiver_id,
+            subject=self.event_subject,
+            text=text,
+            properties=data,
+        )
+
+    async def log_error(self, text: str, data: dict[str, any] = None) -> None:
+        return await super().log_error(
+            sender_id=self.event_sender_id,
+            receiver_id=self.event_receiver_id,
+            subject=self.event_subject,
+            text=text,
+            properties=data,
+        )
\ No newline at end of file
diff --git a/apps/devops/app/common/models/__init__.py b/apps/devops/app/common/models/__init__.py
new file mode 100644
index 0000000..10e5320
--- /dev/null
+++ b/apps/devops/app/common/models/__init__.py
@@ -0,0 +1,7 @@
+from app.common.models.code_depot.code_depot import CodeDepotDoc
+from app.common.models.deployment.deployment import Deployment
+from app.common.models.deployment.deployment import DevOpsReconcileRequest, DevOpsReconcileOperationType
+
+# list of beanie document models,
+# must add here so that the mongo db collection can be automatically created
+db_models = [Deployment, CodeDepotDoc]
\ No newline at end of file
diff --git a/apps/devops/app/common/models/code_depot/__init__.py b/apps/devops/app/common/models/code_depot/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/common/models/code_depot/code_depot.py b/apps/devops/app/common/models/code_depot/code_depot.py
new file mode 100644
index 0000000..c3d8ffc
--- /dev/null
+++ b/apps/devops/app/common/models/code_depot/code_depot.py
@@ -0,0 +1,39 @@
+from datetime import datetime, timezone
+from typing import List, Optional, Dict
+
+from beanie import Document
+from enum import IntEnum
+
+from pymongo import IndexModel
+
+
+class DepotStatus(IntEnum):
+    TO_BE_CREATED = 0
+    CREATED = 1
+    DELETED = 2
+
+
+class UserAccountStatus(IntEnum):
+    TO_BE_CREATED = 0
+    CREATED = 1
+    DELETED = 2
+    DEACTIVATED = 3
+
+class CodeDepotDoc(Document):
+    depot_name: str
+    product_id: str
+    depot_status: DepotStatus
+    collaborators: List[str] = []
+    total_commits: Optional[int] = 0
+    last_commiter: Optional[str] = ""
+    last_update: Optional[datetime] = datetime.now(timezone.utc)
+    weekly_commits: Optional[Dict[str, int]] = {}
+
+    class Settings:
+        name = "code_depot"
+        indexes = [
+            IndexModel([("product_id", 1)])
+        ]
+
+
+
diff --git a/apps/devops/app/common/models/deployment/__init__.py b/apps/devops/app/common/models/deployment/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/common/models/deployment/deployment.py b/apps/devops/app/common/models/deployment/deployment.py
new file mode 100644
index 0000000..b2c719a
--- /dev/null
+++ b/apps/devops/app/common/models/deployment/deployment.py
@@ -0,0 +1,88 @@
+from datetime import datetime, timedelta
+from typing import Literal, List, Optional
+from dataclasses import dataclass
+from enum import Enum
+
+from beanie import Document
+from pydantic import Field, field_validator
+from pydantic import BaseModel
+from pymongo import IndexModel
+
+
+class Deployment(Document):
+    deployment_id: str
+
+    deployment_stage: str
+    deployment_status: Literal["started", "failed", "succeeded", "aborted"]
+
+    deployment_target_env: Literal["alpha", "prod"]
+    deployment_ttl_hours: int = 2
+
+    deployment_project_id: str
+    deployment_project_name: str
+    deployment_product_id: str
+    deployment_product_name: str
+    deployment_git_url: str
+    deployment_git_sha256: str
+    deployment_reason: str
+    deployment_app_url: str = "" # URL to access the deployed application, keep it empty to be filled later
+
+    deployed_by: str
+    created_at: datetime = datetime.now()
+    updated_at: datetime = datetime.now()
+
+    class Settings:
+        name = "deployment"
+        indexes = [
+            IndexModel([("deployment_product_id", 1), ("created_at", 1)]),
+            IndexModel([("deployment_id", 1), ("deployment_status", 1)]),
+            IndexModel([("deployment_id", 1), ("deployment_stage", 1)], unique=True)
+        ]
+
+class InitDeploymentRequest(BaseModel):
+    product_id: str
+    sha256: str = ""
+    target_env: Literal["alpha", "prod"]
+    user_id: str
+    reason: str = "not provided"
+    ttl_hours: int = 3
+
+class CheckDeploymentStatusRequest(BaseModel):
+    product_id: str
+    target_env: str
+    user_id: str
+
+class CheckApplicationLogsRequest(BaseModel):
+    product_id: str
+    target_env: Literal["alpha", "prod"]
+    user_id: str = ''
+    log_level: List[Literal["info", "error", "debug"]] = Field(default_factory=lambda: ["info"])
+    start_time: datetime = datetime.now() - timedelta(minutes=5)
+    end_time: datetime = datetime.now()
+    limit: int = 1000
+
+class CheckApplicationLogsResponse(BaseModel):
+    product_id: str
+    target_env: Literal["alpha", "prod"]
+    user_id: str = ''
+    log_level: List[Literal["info", "error", "debug"]]
+    start_time: datetime
+    end_time: datetime
+    limit: int
+    logs: list[str]
+
+class DevOpsReconcileOperationType(str, Enum):
+    START = "start"
+    TERMINATE = "terminate"
+    RESTART = "restart"
+
+class DevOpsReconcileRequest(BaseModel):
+    operation: DevOpsReconcileOperationType
+    id: str
+    devops_proj_id: str
+    triggered_user_id: str
+    causes: str
+    commit_sha256: Optional[str] = None
+    target_env: Literal["alpha", "prod"]
+    ttl_control: bool = False
+    ttl: int = 10800
\ No newline at end of file
diff --git a/apps/devops/app/common/models/deployment/heartbeat.py b/apps/devops/app/common/models/deployment/heartbeat.py
new file mode 100644
index 0000000..7c7a624
--- /dev/null
+++ b/apps/devops/app/common/models/deployment/heartbeat.py
@@ -0,0 +1,17 @@
+from typing import Literal, Optional
+from pydantic import BaseModel
+
+
+class DevOpsReconcileJobHeartbeatPayload(BaseModel):
+    operation: Literal["heartbeat"] = "heartbeat"
+    id: str
+    status: Literal["running", "success", "failed", "terminated"]
+    phase: Literal["initializing", "jenkins_build", "building", "deploying", "finished"]
+    phase_message: str
+    error: Optional[str] = None
+    url: Optional[str] = None
+
+
+class DevOpsReconcileJobHeartbeatMessage(BaseModel):
+    event_type: Literal["DevOpsReconcileJobHeartbeat"]
+    payload: DevOpsReconcileJobHeartbeatPayload
\ No newline at end of file
diff --git a/apps/devops/app/common/probes/__init__.py b/apps/devops/app/common/probes/__init__.py
new file mode 100644
index 0000000..4071df8
--- /dev/null
+++ b/apps/devops/app/common/probes/__init__.py
@@ -0,0 +1,140 @@
+import logging
+from enum import Enum
+from typing import Optional, Callable, Tuple, Dict
+import inspect
+from datetime import datetime, timezone
+
+# ProbeType is an Enum that defines the types of probes that can be registered.
+class ProbeType(Enum):
+  LIVENESS = "liveness"
+  READINESS = "readiness"
+  STARTUP = "startup"
+
+# ProbeResult is a class that represents the result of a probe check.
+class ProbeResult:
+  def __init__(self, success: bool, message: str = "ok", data: Optional[dict] = None):
+    self.success = success
+    self.message = message
+    self.data = data or {}
+
+  def to_dict(self) -> dict:
+    return {
+      "success": self.success,
+      "message": self.message,
+      "data": self.data
+    }
+
+# Probe is a class that represents a probe that can be registered.
+class Probe:
+  def __init__(self, type: ProbeType, path: str, check_fn: Callable, name: Optional[str] = None):
+    self.type = type
+    self.path = path
+    self.check_fn = check_fn
+    self.name = name or f"{type.value}-{id(self)}"
+
+  async def execute(self) -> ProbeResult:
+    try:
+      result = self.check_fn()
+      if inspect.isawaitable(result):
+        result = await result
+      
+      if isinstance(result, ProbeResult):
+        return result
+      elif isinstance(result, bool):
+        return ProbeResult(result, "ok" if result else "failed")
+      else:
+        return ProbeResult(True, "ok")
+    except Exception as e:
+      return ProbeResult(False, str(e))
+
+# ProbeGroup is a class that represents a group of probes that can be checked together.
+class ProbeGroup:
+    def __init__(self, path: str):
+        self.path = path
+        self.probes: Dict[str, Probe] = {}
+
+    def add_probe(self, probe: Probe):
+        self.probes[probe.name] = probe
+
+    async def check_all(self) -> Tuple[bool, dict]:
+        results = {}
+        all_success = True
+        
+        for name, probe in self.probes.items():
+            result = await probe.execute()
+            results[name] = result.to_dict()
+            if not result.success:
+                all_success = False
+                
+        return all_success, results
+
+# FrameworkAdapter is an abstract class that defines the interface for framework-specific probe adapters.
+class FrameworkAdapter:
+    async def handle_request(self, group: ProbeGroup):
+        all_success, results = await group.check_all()
+        status_code = 200 if all_success else 503
+        return {"status": "ok" if all_success else "failed", "payload": results, "timestamp": int(datetime.now(timezone.utc).timestamp())}, status_code
+
+    def register_route(self, path: str, handler: Callable):
+        raise NotImplementedError
+
+# ProbeManager is a class that manages the registration of probes and their corresponding framework adapters.
+class ProbeManager:
+    _default_paths = {
+        ProbeType.LIVENESS: "/_/livez",
+        ProbeType.READINESS: "/_/readyz",
+        ProbeType.STARTUP: "/_/healthz"
+    }
+
+    def __init__(self):
+        self.groups: Dict[str, ProbeGroup] = {}
+        self.adapters: Dict[str, FrameworkAdapter] = {}
+        self._startup_complete = False
+
+    def register_adapter(self, framework: str, adapter: FrameworkAdapter):
+        self.adapters[framework] = adapter
+        logging.info(f"Registered probe adapter ({adapter}) for framework: {framework}")
+        
+    def register(
+        self,
+        type: ProbeType,
+        check_func: Optional[Callable] = None,
+        path: Optional[str] = None,
+        prefix: str = "",
+        name: Optional[str] = None,
+        frameworks: Optional[list] = None
+    ):
+        path = path or self._default_paths.get(type, "/_/healthz")
+        if prefix:
+            path = f"{prefix}{path}"
+        
+        if type == ProbeType.STARTUP and check_func is None:
+            check_func = self._default_startup_check
+
+        probe = Probe(type, path, check_func or (lambda: True), name)
+
+        if path not in self.groups:
+            self.groups[path] = ProbeGroup(path)
+        self.groups[path].add_probe(probe)
+
+        for framework in (frameworks or ["default"]):
+            self._register_route(framework, path)
+            logging.info(f"Registered {type.value} probe route ({path}) for framework: {framework}")
+
+    def _register_route(self, framework: str, path: str):
+        if framework not in self.adapters:
+            return
+
+        adapter = self.adapters[framework]
+        group = self.groups[path]
+
+        async def handler():
+            return await adapter.handle_request(group)
+
+        adapter.register_route(path, handler)
+
+    def _default_startup_check(self) -> bool:
+        return self._startup_complete
+
+    def mark_startup_complete(self):
+        self._startup_complete = True
\ No newline at end of file
diff --git a/apps/devops/app/common/probes/adapters.py b/apps/devops/app/common/probes/adapters.py
new file mode 100644
index 0000000..2ecd38a
--- /dev/null
+++ b/apps/devops/app/common/probes/adapters.py
@@ -0,0 +1,15 @@
+from . import FrameworkAdapter
+from fastapi.responses import JSONResponse
+from typing import Callable
+
+# FastAPIAdapter is a class that implements the FrameworkAdapter interface for FastAPI.
+class FastAPIAdapter(FrameworkAdapter):
+    def __init__(self, app):
+        self.app = app
+
+    def register_route(self,path: str, handler: Callable):
+        async def wrapper():
+            data, status_code = await handler()
+            return JSONResponse(content=data, status_code=status_code)
+        
+        self.app.add_api_route(path, wrapper, methods=["GET"])
diff --git a/apps/devops/app/envs/alpha.yml b/apps/devops/app/envs/alpha.yml
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/envs/prod.yml b/apps/devops/app/envs/prod.yml
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/main.py b/apps/devops/app/main.py
new file mode 100644
index 0000000..1bfc3d4
--- /dev/null
+++ b/apps/devops/app/main.py
@@ -0,0 +1,17 @@
+from fastapi.responses import RedirectResponse
+from app.common.config.site_settings import site_settings
+from app.bootstrap.application import create_app
+
+app = create_app()
+
+@app.get("/", status_code=301)
+async def root():
+    """
+    TODO: redirect client to /doc#
+    """
+    return RedirectResponse("docs")
+
+if __name__ == "__main__":
+    import uvicorn
+    print("Starting FastAPI server...")
+    uvicorn.run("main:app", host=site_settings.SERVER_HOST, port=site_settings.SERVER_PORT, reload=True)
\ No newline at end of file
diff --git a/apps/devops/app/providers/__init__.py b/apps/devops/app/providers/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/providers/common.py b/apps/devops/app/providers/common.py
new file mode 100644
index 0000000..656bcc3
--- /dev/null
+++ b/apps/devops/app/providers/common.py
@@ -0,0 +1,31 @@
+from fastapi.middleware.cors import CORSMiddleware
+from app.common.config.site_settings import site_settings
+
+
+def register(app):
+    app.debug = site_settings.DEBUG
+    app.title = site_settings.NAME
+
+    add_global_middleware(app)
+
+    # This hook ensures that a connection is opened to handle any queries
+    # generated by the request.
+    @app.on_event("startup")
+    async def startup():
+        pass
+
+    # This hook ensures that the connection is closed when we've finished
+    # processing the request.
+    @app.on_event("shutdown")
+    async def shutdown():
+        pass
+
+
+def add_global_middleware(app):
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
diff --git a/apps/devops/app/providers/database.py b/apps/devops/app/providers/database.py
new file mode 100644
index 0000000..8716b8e
--- /dev/null
+++ b/apps/devops/app/providers/database.py
@@ -0,0 +1,34 @@
+import asyncio
+from app.common.config.app_settings import app_settings
+from beanie import init_beanie
+from motor.motor_asyncio import AsyncIOMotorClient
+from app.common.models import db_models
+from app.common.probes import ProbeResult
+
+client = AsyncIOMotorClient(
+    app_settings.APP_MONGODB_URI,
+    serverSelectionTimeoutMS=60000,
+    minPoolSize=5,  # Minimum number of connections in the pool
+    maxPoolSize=20,  # Maximum number of connections in the pool
+)
+
+def register(app):
+    app.debug = "auth_mongo_debug"
+    app.title = "auth_mongo_name"
+
+    @app.on_event("startup")
+    async def start_database():
+        await initiate_database()
+
+async def check_database_initialized() -> ProbeResult:
+    try:
+        await asyncio.wait_for(client.server_info(), timeout=5)
+        return ProbeResult(success=True, message="service has been initialized and ready to serve")
+    except Exception:
+        return ProbeResult(success=False, message="service is not initialized yet", data={"error": "database is not ready"})
+
+
+async def initiate_database():
+    await init_beanie(
+        database=client[app_settings.APP_MONGODB_NAME], document_models=db_models
+    )
diff --git a/apps/devops/app/providers/exception_handler.py b/apps/devops/app/providers/exception_handler.py
new file mode 100644
index 0000000..21117a5
--- /dev/null
+++ b/apps/devops/app/providers/exception_handler.py
@@ -0,0 +1,39 @@
+from fastapi import FastAPI, HTTPException
+from fastapi.exceptions import RequestValidationError
+from starlette.requests import Request
+from starlette.responses import JSONResponse
+from starlette.status import (
+    HTTP_400_BAD_REQUEST,
+    HTTP_401_UNAUTHORIZED,
+    HTTP_403_FORBIDDEN,
+    HTTP_404_NOT_FOUND,
+    HTTP_422_UNPROCESSABLE_ENTITY,
+    HTTP_500_INTERNAL_SERVER_ERROR,
+)
+
+
+async def custom_http_exception_handler(request: Request, exc: HTTPException):
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={"error": exc.detail},
+    )
+
+
+
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    return JSONResponse(
+        status_code=HTTP_400_BAD_REQUEST,
+        content={"error": str(exc)},
+    )
+
+async def exception_handler(request: Request, exc: Exception):
+    return JSONResponse(
+        status_code=HTTP_500_INTERNAL_SERVER_ERROR,
+        content={"error": str(exc)},
+    )
+
+
+def register(app: FastAPI):
+    app.add_exception_handler(HTTPException, custom_http_exception_handler)
+    app.add_exception_handler(RequestValidationError, validation_exception_handler)
+    app.add_exception_handler(Exception, exception_handler)
diff --git a/apps/devops/app/providers/logger.py b/apps/devops/app/providers/logger.py
new file mode 100644
index 0000000..2785603
--- /dev/null
+++ b/apps/devops/app/providers/logger.py
@@ -0,0 +1,7 @@
+from app.common.log.base_logger import LoggerBase
+
+
+def register_logger():
+    print("📢 Setting up logging interception...")
+    LoggerBase.configure_uvicorn_logging()
+    print("✅ Logging interception complete. Logs are formatted and deduplicated!")
diff --git a/apps/devops/app/providers/message_queue.py b/apps/devops/app/providers/message_queue.py
new file mode 100644
index 0000000..b2d87cb
--- /dev/null
+++ b/apps/devops/app/providers/message_queue.py
@@ -0,0 +1,60 @@
+import asyncio
+import os
+from app.backend.infra.rabbitmq.async_subscriber import AsyncMQSubscriber
+from app.backend.services.deployment_status_update_service import DeploymentStatusUpdateService
+
+
+def register(app):
+    # Initialize the message subscriber and status update service lazily to avoid blocking startup
+    app.deployment_heartbeat_subscriber = None
+    app.deployment_status_service = None
+    
+    @app.on_event("startup")
+    async def start_message_consumers():
+        print("🚀 Starting message consumers...")
+        
+        try:
+            # Initialize services during startup to avoid blocking app initialization
+            print("🔧 Initializing services...")
+            output_queue_name = os.getenv("RABBITMQ_OUTPUT_QUEUE_NAME", "freeleaps.devops.reconciler.output")
+            print(f"Using output queue: {output_queue_name}")
+            app.deployment_heartbeat_subscriber = AsyncMQSubscriber(output_queue_name)
+            app.deployment_status_service = DeploymentStatusUpdateService()
+            print("✅ Services initialized")
+            
+            # Register the heartbeat processor
+            print("📝 Registering deployment heartbeat processor...")
+            await app.deployment_heartbeat_subscriber.register_consumer(
+                registry_key="deployment_heartbeat_processor",
+                callback_method=app.deployment_status_service.process_heartbeat_message,
+                args={}
+            )
+            print("✅ Registered deployment heartbeat processor")
+            
+            # Start the subscriber in the background
+            print("🔄 Starting subscriber in background...")
+            loop = asyncio.get_running_loop()
+            loop.create_task(
+                app.deployment_heartbeat_subscriber.subscribe(max_retries=5, event_loop=loop)
+            )
+            print("✅ Started deployment heartbeat subscriber")
+            print("🎉 Message consumers startup complete!")
+        except Exception as e:
+            print(f"❌ Error in message consumer startup: {e}")
+            # Don't raise the exception to prevent app startup failure
+            print("⚠️  App will continue without message queue functionality")
+
+    @app.on_event("shutdown")
+    async def stop_message_consumers():
+        # Clear consumers and close connection
+        print("Stopping message consumers")
+        if app.deployment_heartbeat_subscriber:
+            try:
+                await app.deployment_heartbeat_subscriber.clear_all_consumers()
+                print("Cleared all consumers")
+                await app.deployment_heartbeat_subscriber.close()
+                print("Closed deployment heartbeat subscriber")
+            except Exception as e:
+                print(f"Error during shutdown: {e}")
+        else:
+            print("No message consumers to stop")
\ No newline at end of file
diff --git a/apps/devops/app/providers/metrics.py b/apps/devops/app/providers/metrics.py
new file mode 100644
index 0000000..1ae941a
--- /dev/null
+++ b/apps/devops/app/providers/metrics.py
@@ -0,0 +1,16 @@
+import logging
+from prometheus_fastapi_instrumentator import Instrumentator
+from app.common.config.app_settings import app_settings
+
+def register(app):
+  instrumentator = (
+      Instrumentator().instrument(
+        app,
+        metric_namespace="freeleaps",
+        metric_subsystem=app_settings.APP_NAME)
+  )
+
+  @app.on_event("startup")
+  async def startup():
+    instrumentator.expose(app, endpoint="/api/_/metrics", should_gzip=True)
+    logging.info("Metrics endpoint exposed at /api/_/metrics")
\ No newline at end of file
diff --git a/apps/devops/app/providers/probes.py b/apps/devops/app/providers/probes.py
new file mode 100644
index 0000000..883e3d6
--- /dev/null
+++ b/apps/devops/app/providers/probes.py
@@ -0,0 +1,25 @@
+from app.common.probes import ProbeManager, ProbeType
+from app.common.probes.adapters import FastAPIAdapter
+from .database import check_database_initialized
+
+def register(app):
+    probes_manager = ProbeManager()
+    probes_manager.register_adapter("fastapi", FastAPIAdapter(app))
+
+    async def readiness_checker():
+        return await check_database_initialized()
+
+    probes_manager.register(
+        name="readiness",
+        prefix="/api",
+        type=ProbeType.READINESS,
+        check_func=readiness_checker,
+        frameworks=["fastapi"]
+    )
+
+    probes_manager.register(name="liveness", prefix="/api", type=ProbeType.LIVENESS, frameworks=["fastapi"])
+    probes_manager.register(name="startup", prefix="/api", type=ProbeType.STARTUP, frameworks=["fastapi"])
+
+    @app.on_event("startup")
+    async def mark_startup_complete():
+        probes_manager.mark_startup_complete()
\ No newline at end of file
diff --git a/apps/devops/app/providers/router.py b/apps/devops/app/providers/router.py
new file mode 100644
index 0000000..b273eb8
--- /dev/null
+++ b/apps/devops/app/providers/router.py
@@ -0,0 +1,34 @@
+from app.routes import api_router
+
+from starlette import routing
+
+
+def register(app):
+    app.include_router(
+        api_router,
+        prefix="/api",
+        tags=["api"],
+        dependencies=[],
+        responses={404: {"description": "no page found"}},
+    )
+
+    if app.debug:
+        for route in app.routes:
+            if not isinstance(route, routing.WebSocketRoute):
+                print(
+                    {
+                        "path": route.path,
+                        "endpoint": route.endpoint,
+                        "name": route.name,
+                        "methods": route.methods,
+                    }
+                )
+            else:
+                print(
+                    {
+                        "path": route.path,
+                        "endpoint": route.endpoint,
+                        "name": route.name,
+                        "type": "web socket route",
+                    }
+                )
diff --git a/apps/devops/app/providers/scheduler.py b/apps/devops/app/providers/scheduler.py
new file mode 100644
index 0000000..7ea8d6c
--- /dev/null
+++ b/apps/devops/app/providers/scheduler.py
@@ -0,0 +1,8 @@
+import asyncio
+
+
+def register(app):
+    @app.on_event("startup")
+    async def start_scheduler():
+        #create your scheduler here
+        pass
diff --git a/apps/devops/app/routes/__init__.py b/apps/devops/app/routes/__init__.py
new file mode 100644
index 0000000..ab02a04
--- /dev/null
+++ b/apps/devops/app/routes/__init__.py
@@ -0,0 +1,7 @@
+from fastapi import APIRouter
+from app.routes.deployment.apis import router as deployment_api
+
+api_router = APIRouter()
+
+# TODO: add custom routers here
+api_router.include_router(deployment_api, tags=["deployment"])
diff --git a/apps/devops/app/routes/deployment/__init__.py b/apps/devops/app/routes/deployment/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/app/routes/deployment/apis.py b/apps/devops/app/routes/deployment/apis.py
new file mode 100644
index 0000000..31d61d3
--- /dev/null
+++ b/apps/devops/app/routes/deployment/apis.py
@@ -0,0 +1,75 @@
+from datetime import datetime
+from typing import List, Optional
+
+from fastapi import APIRouter, Depends
+from loguru import logger
+
+from app.common.models import CodeDepotDoc
+from app.common.models.deployment.deployment import Deployment, InitDeploymentRequest, CheckDeploymentStatusRequest, \
+    CheckApplicationLogsRequest, CheckApplicationLogsResponse
+from app.routes.deployment.service import DeploymentService, get_deployment_service
+
+router = APIRouter(prefix="/deployment")
+
+@router.post("/initDeployment")
+## insert a new Deployment object to db
+async def init_deployment(
+        request: InitDeploymentRequest,
+        service: DeploymentService = Depends(get_deployment_service)
+) -> Deployment:
+    return await service.init_deployment(request)
+
+@router.get('/getLatestDeployment')
+async def get_latest_deployment(
+        product_id: str,
+        target_env: str = "alpha",
+        service: DeploymentService = Depends(get_deployment_service)
+) -> Optional[Deployment]:
+    """
+    Get the latest deployment for a given product ID.
+    """
+    return await service.get_latest_deployment(product_id, target_env)
+
+@router.post("/updateDeploymentStatus")
+async def update_deployment(
+        request: Deployment,
+        service: DeploymentService = Depends(get_deployment_service)
+) -> Deployment:
+    return await service.update_deployment_status(request)
+
+@router.get("/checkDeploymentStatus")
+async def check_deployment_status(
+        product_id: str,
+        service: DeploymentService = Depends(get_deployment_service)
+) -> List[Deployment]:
+    return await service.check_deployment_status(product_id)
+
+@router.post("/createDummyCodeDepot")
+async def create_dummy_code_depot(
+        service: DeploymentService = Depends(get_deployment_service)
+) -> CodeDepotDoc:
+    """
+    Create a dummy code depot for testing purposes.
+    """
+    try:
+        depot_name = await service.create_dummy_code_depot()
+        return depot_name
+    except Exception as e:
+        logger.error(f"Failed to create dummy code depot: {e}")
+        raise e
+
+@router.post("/checkApplicationLogs")
+async def check_application_logs(
+        request: CheckApplicationLogsRequest,
+        service: DeploymentService = Depends(get_deployment_service)
+) -> CheckApplicationLogsResponse:
+    """
+    Check application logs for a given deployment.
+    """
+    try:
+        res = await service.check_application_logs(request)
+        return res
+    except Exception as e:
+        logger.error(f"Failed to check application logs: {e}")
+        raise e
+
diff --git a/apps/devops/app/routes/deployment/service.py b/apps/devops/app/routes/deployment/service.py
new file mode 100644
index 0000000..650dd8d
--- /dev/null
+++ b/apps/devops/app/routes/deployment/service.py
@@ -0,0 +1,262 @@
+import uuid
+from collections import defaultdict
+from datetime import datetime, timedelta
+from typing import List
+
+import httpx
+import requests
+from fastapi import HTTPException, Depends
+
+from app.common.config.site_settings import site_settings
+from app.common.models import Deployment, DevOpsReconcileRequest, DevOpsReconcileOperationType
+from app.common.models.code_depot.code_depot import CodeDepotDoc, DepotStatus
+from app.common.models.deployment.deployment import InitDeploymentRequest, CheckApplicationLogsRequest, \
+    CheckApplicationLogsResponse
+
+from loguru import logger
+
+
+class DeploymentService:
+
+    def __init__(self):
+        pass
+
+    async def init_deployment(
+        self,
+        request: InitDeploymentRequest,
+    ) -> Deployment:
+        """
+        """
+        # TODO validate permission with user_id
+        # currently skip
+
+        code_depot = await self._get_code_depot_by_product_id(request.product_id)
+
+        git_url = await self._compose_git_url(code_depot.depot_name)
+
+
+        # retrieve project name
+        project_name = "TODO"
+
+        # retrieve product info, depot name should be the same as product name
+        product_id = request.product_id
+        product_name = code_depot.depot_name
+
+        deployment = Deployment.model_construct(
+            deployment_id = str(uuid.uuid4()),
+            deployment_stage = "init",
+            deployment_status = "started",
+            deployment_target_env = request.target_env,
+            deployment_ttl_hours = request.ttl_hours,
+            deployment_project_id = "project_id",
+            deployment_project_name = "project_name",
+            deployment_product_id = product_id,
+            deployment_product_name = product_name,
+            deployment_git_url = git_url,
+            deployment_git_sha256 = request.sha256,
+            deployment_reason = request.reason,
+            deployed_by = request.user_id,
+            created_at = datetime.now(),
+            updated_at = datetime.now(),
+        )
+
+        await self._start_deployment(deployment)
+        res = await Deployment.insert(deployment)
+
+        return res
+
+    async def get_latest_deployment(
+            self,
+            product_id: str,
+            target_env: str,
+    ) -> Deployment:
+        time_threshold = datetime.now() - timedelta(hours=168)  # 7 days
+        deployment_records = await Deployment.find(
+            Deployment.deployment_product_id == product_id,
+            Deployment.deployment_target_env == target_env,
+            Deployment.updated_at >= time_threshold
+        ).to_list()
+
+        if not deployment_records or len(deployment_records) == 0:
+            logger.warning(f"No deployment records found for product ID: {product_id} in the last 7 days")
+            return None
+
+        latest_deployment = max(deployment_records, key=lambda d: (d.updated_at, d.created_at))
+        return latest_deployment
+
+    async def check_deployment_status(
+            self,
+            product_id: str,
+    ) -> List[Deployment]:
+        """
+        Check the deployment status of the application, only check past 48 hours
+        """
+        # TODO implement this function
+        time_threshold = datetime.now() - timedelta(hours=48)
+        deployment_records = await Deployment.find(
+            Deployment.deployment_product_id == product_id,
+            Deployment.created_at >= time_threshold
+        ).to_list()
+        grouped = defaultdict(list)
+        for deployment in deployment_records:
+            grouped[deployment.deployment_id].append(deployment)
+        for deployment_list in grouped.values():
+            deployment_list.sort(key=lambda d: (d.created_at, d.updated_at))
+        latest_deployments = [deployments[-1] for deployments in grouped.values()]
+
+        return latest_deployments
+
+    async def update_deployment_status(
+            self,
+            deployment: Deployment
+    ) -> Deployment:
+        latest_record = await Deployment.find_one(
+            Deployment.deployment_id == deployment.deployment_id,
+           sort=[("created_at", -1)]
+        )
+
+        if not latest_record:
+            raise HTTPException(status_code=404, detail="No record found, please initiate deployment first")
+
+      # TODO add more sanity check logic here
+
+        # if updating the same stage, just update the status and timestamp
+        # else, create a new record with the same deployment_id
+        res = None
+        if deployment.deployment_stage == latest_record.deployment_stage:
+            # update existing record
+            latest_record.deployment_status = deployment.deployment_status
+            latest_record.updated_at = deployment.updated_at or datetime.now()
+            res = await latest_record.save()
+        else:
+            # create new record
+            deployment.deployment_id = latest_record.deployment_id
+            deployment.created_at =  datetime.now()
+            deployment.updated_at = datetime.now()
+            res = await deployment.insert()
+
+        return res
+
+    async def _get_code_depot_by_product_id(
+        self,
+        product_id: str,
+    ) -> CodeDepotDoc:
+        """
+        Retrieve code depot by product id
+        """
+        code_depot = await CodeDepotDoc.find_one(CodeDepotDoc.product_id == product_id)
+        if not code_depot:
+            raise HTTPException(status_code=404,
+                                detail="Code depot not found for the given product id, "
+                                            "please initialize the product first"
+                                )
+        return code_depot
+
+    async def _compose_git_url(
+        self,
+        code_depot_name: str,
+        gitea_base_url: str = site_settings.BASE_GITEA_URL
+    ) -> str:
+        """
+        Retrieve git url by product id
+        """
+        return f"{gitea_base_url}/prodcuts/{code_depot_name.lower()}.git"
+
+    async def _start_deployment(
+            self,
+            deployment: Deployment,
+            reconsile_base_url: str = site_settings.BASE_RECONCILE_URL,
+    ) -> bool:
+        """
+        Start the deployment
+        Return true atm, modify calling reconcile service later
+        """
+        # construct request body
+        request = DevOpsReconcileRequest(
+            operation=DevOpsReconcileOperationType.START,
+            id=deployment.deployment_id,
+            devops_proj_id=deployment.deployment_product_id,
+            triggered_user_id=deployment.deployed_by,
+            causes=deployment.deployment_reason,
+            target_env=deployment.deployment_target_env,
+            ttl_control=True,
+            ttl=deployment.deployment_ttl_hours * 60 * 60,
+            commit_sha256=deployment.deployment_git_sha256,
+        )
+        # send request to reoncile service
+        async with httpx.AsyncClient() as client:
+            response = await client.post(
+                f"{reconsile_base_url}/api/devops/reconcile",
+                json=request.model_dump()
+            )
+            if response.status_code != 200:
+                raise HTTPException(status_code=response.status_code, detail=response.text)
+        return True
+
+    async def check_application_logs(
+            self,
+            request: CheckApplicationLogsRequest,
+            loki_url: str = site_settings.BASE_LOKI_URL,
+    ) -> CheckApplicationLogsResponse:
+        # Convert to nanoseconds since epoch
+        start_ns = int(request.start_time.timestamp() * 1e9)
+        end_ns = int(request.end_time.timestamp() * 1e9)
+
+        # TODO: convert product_id to application name if needed
+        base_query = f'{{application="{request.product_id}", environment="{request.target_env}"}}'
+        log_level = '|'.join(request.log_level) if request.log_level else ''
+        loki_query = f'{base_query} |~ "{log_level}"'
+
+        params = {
+            "query": loki_query,
+            "limit": request.limit,
+            "start": start_ns,
+            "end": end_ns,
+        }
+
+        url = f"{loki_url}/loki/api/v1/query_range"
+        response = requests.get(url, params=params)
+
+        if response.status_code != 200:
+            raise Exception(f"Query failed: {response.status_code} - {response.text}")
+
+        data = response.json()
+        streams = data.get("data", {}).get("result", [])
+
+        logs = []
+        for stream in streams:
+            for ts, log in stream.get("values", []):
+                timestamp = datetime.fromtimestamp(int(ts) / 1e9)
+                logs.append(f"[{timestamp}] {log.strip()}")
+
+        return CheckApplicationLogsResponse(
+            product_id=request.product_id,
+            target_env=request.target_env,
+            user_id=request.user_id,
+            log_level=request.log_level,
+            start_time=request.start_time,
+            end_time=request.end_time,
+            limit=request.limit,
+            logs=logs
+        )
+
+# TODO: dummy test code, remove later
+    async def create_dummy_code_depot(
+            self,
+    ) -> CodeDepotDoc:
+        """
+        Create a dummy code depot for testing purposes.
+        """
+        depot_name = f"dummy-depot-{uuid.uuid4()}"
+        code_depot = CodeDepotDoc(
+            depot_name=depot_name,
+            product_id="dummy-product-id",
+            depot_status=DepotStatus.CREATED
+        )
+
+        return await CodeDepotDoc.insert_one(code_depot)
+
+deployment_service = DeploymentService()
+
+def get_deployment_service() -> DeploymentService:
+    return deployment_service
\ No newline at end of file
diff --git a/apps/devops/app/scripts/mongodb/docker-compose.yml b/apps/devops/app/scripts/mongodb/docker-compose.yml
new file mode 100644
index 0000000..8ab07c7
--- /dev/null
+++ b/apps/devops/app/scripts/mongodb/docker-compose.yml
@@ -0,0 +1,18 @@
+version: '3.8'
+
+services:
+  mongodb:
+    image: mongo:6.0  # You can change to the desired version
+    container_name: mongodb
+    restart: unless-stopped
+    ports:
+      - "27017:27017"
+    environment:
+      MONGO_INITDB_DATABASE: testdb  # <-- This creates the initial database
+    volumes:
+      - mongodb_data:/data/db
+    command: ["mongod", "--noauth"]  # <-- Disable authentication
+
+
+volumes:
+  mongodb_data:
\ No newline at end of file
diff --git a/apps/devops/requirements.txt b/apps/devops/requirements.txt
new file mode 100644
index 0000000..f6f1fa8
--- /dev/null
+++ b/apps/devops/requirements.txt
@@ -0,0 +1,15 @@
+beanie==1.29.0
+fastapi==0.115.12
+loguru==0.7.3
+motor==3.7.0
+prometheus_fastapi_instrumentator==7.1.0
+pydantic_settings==2.9.1
+pytest==7.1.2
+starlette==0.46.2
+uvicorn==0.34.2
+httpx==0.24.0
+pydantic-settings~=2.9.1
+pymongo~=4.12.1
+pydantic~=2.11.4
+requests~=2.32.3
+aio-pika==9.4.3
\ No newline at end of file
diff --git a/apps/devops/tests/__init__.py b/apps/devops/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/tests/routes/__init__.py b/apps/devops/tests/routes/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/devops/tests/routes/test_hello_world.py b/apps/devops/tests/routes/test_hello_world.py
new file mode 100644
index 0000000..638a4b2
--- /dev/null
+++ b/apps/devops/tests/routes/test_hello_world.py
@@ -0,0 +1,27 @@
+from unittest.mock import AsyncMock, patch
+from fastapi.testclient import TestClient
+from app.main import app
+from app.routes.hello_world.apis import get_hello_world_dao
+
+
+def test_hello_world():
+    with TestClient(app) as client:
+        response = client.get("/api/hello_world/")
+        assert response.status_code == 200
+        assert response.json() == {"message": "Hello, World!"}
+
+
+# mock out initiate_database so it doesn’t run during tests
+@patch("app.providers.database.initiate_database", new_callable=AsyncMock)
+def test_insert_hello_world(mock_db_init):
+
+    class MockHelloWorldDao:
+        async def create_hello_world(self, msg: str, user_id: int):
+            return {"message": msg, "user_id": user_id}
+
+    app.dependency_overrides[get_hello_world_dao] = lambda: MockHelloWorldDao()
+    with TestClient(app) as client:
+        response = client.post("/api/hello_world/insert", params={"msg": "Test Message"})
+        assert response.status_code == 200
+        assert response.json() == {"message": "Test Message", "user_id": 1}
+    app.dependency_overrides.clear()
diff --git a/apps/devops/tests/services/test_deployment_status_update_service.py b/apps/devops/tests/services/test_deployment_status_update_service.py
new file mode 100644
index 0000000..8bd4a01
--- /dev/null
+++ b/apps/devops/tests/services/test_deployment_status_update_service.py
@@ -0,0 +1,216 @@
+import pytest
+from unittest.mock import AsyncMock
+from datetime import datetime
+from app.backend.services.deployment_status_update_service import DeploymentStatusUpdateService
+from app.common.models.deployment.deployment import Deployment
+
+
+@pytest.fixture
+def status_update_service():
+    return DeploymentStatusUpdateService()
+
+
+@pytest.fixture
+def sample_heartbeat_message():
+    return {
+        "event_type": "DevOpsReconcileJobHeartbeat",
+        "payload": {
+            "operation": "heartbeat",
+            "id": "deployment-123-abc",
+            "status": "running",
+            "phase": "building",
+            "phase_message": "Building container image",
+            "error": None,
+            "url": None
+        }
+    }
+
+
+@pytest.fixture
+def sample_success_message():
+    return {
+        "event_type": "DevOpsReconcileJobHeartbeat", 
+        "payload": {
+            "operation": "heartbeat",
+            "id": "deployment-789-ghi",
+            "status": "success",
+            "phase": "finished",
+            "phase_message": "Deployment completed successfully",
+            "error": None,
+            "url": "https://my-app-alpha.freeleaps.com"
+        }
+    }
+
+
+@pytest.fixture
+def sample_failed_message():
+    return {
+        "event_type": "DevOpsReconcileJobHeartbeat",
+        "payload": {
+            "operation": "heartbeat",
+            "id": "deployment-456-def",
+            "status": "failed",
+            "phase": "jenkins_build",
+            "phase_message": "Build failed due to compilation errors",
+            "error": "Build step 'Invoke top-level Maven targets' marked build as failure",
+            "url": None
+        }
+    }
+
+
+@pytest.fixture
+def mock_deployment():
+    from unittest.mock import AsyncMock
+    
+    class MockDeployment:
+        def __init__(self):
+            self.deployment_id = "deployment-123-abc"
+            self.deployment_status = "started"
+            self.deployment_stage = "initialization"
+            self.deployment_app_url = ""
+            self.updated_at = datetime.now()
+            self.save = AsyncMock()
+    
+    return MockDeployment()
+
+
+class TestDeploymentStatusUpdateService:
+    
+    @pytest.mark.asyncio
+    async def test_status_mapping(self, status_update_service):
+        """Test that status mapping works correctly"""
+        assert status_update_service.status_mapping["running"] == "started"
+        assert status_update_service.status_mapping["success"] == "succeeded"
+        assert status_update_service.status_mapping["failed"] == "failed"
+        assert status_update_service.status_mapping["terminated"] == "aborted"
+
+    @pytest.mark.asyncio
+    async def test_phase_to_stage_mapping(self, status_update_service):
+        """Test that phase to stage mapping works correctly"""
+        assert status_update_service.phase_to_stage_mapping["initializing"] == "initialization"
+        assert status_update_service.phase_to_stage_mapping["jenkins_build"] == "build"
+        assert status_update_service.phase_to_stage_mapping["building"] == "build"
+        assert status_update_service.phase_to_stage_mapping["deploying"] == "deployment"
+        assert status_update_service.phase_to_stage_mapping["finished"] == "completed"
+
+    @pytest.mark.asyncio
+    async def test_process_running_heartbeat_message(self, status_update_service, sample_heartbeat_message, mock_deployment, monkeypatch):
+        """Test processing a running status heartbeat"""
+        # Mock Deployment.find_one to return our mock deployment
+        async def mock_find_one(query):
+            _ = query  # Parameter required by interface but not used in mock
+            return mock_deployment
+        
+        # Mock the logger methods to avoid actual logging during tests
+        status_update_service.module_logger.log_info = AsyncMock()
+        status_update_service.module_logger.log_warning = AsyncMock()
+        status_update_service.module_logger.log_error = AsyncMock()
+        status_update_service.module_logger.log_exception = AsyncMock()
+        
+        # Mock the Beanie query mechanism properly
+        mock_deployment_class = AsyncMock()
+        mock_deployment_class.find_one = mock_find_one
+        monkeypatch.setattr("app.backend.services.deployment_status_update_service.Deployment", mock_deployment_class)
+        
+        await status_update_service.process_heartbeat_message(
+            "test_key", sample_heartbeat_message, {}
+        )
+        
+        # Verify the deployment was updated correctly
+        assert mock_deployment.deployment_status == "started"
+        assert mock_deployment.deployment_stage == "build"
+        mock_deployment.save.assert_called_once()
+
+    @pytest.mark.asyncio 
+    async def test_process_success_heartbeat_message(self, status_update_service, sample_success_message, mock_deployment, monkeypatch):
+        """Test processing a success status heartbeat with URL"""
+        async def mock_find_one(query):
+            _ = query  # Parameter required by interface but not used in mock
+            return mock_deployment
+        
+        # Mock the logger methods
+        status_update_service.module_logger.log_info = AsyncMock()
+        status_update_service.module_logger.log_warning = AsyncMock()
+        status_update_service.module_logger.log_error = AsyncMock()
+        status_update_service.module_logger.log_exception = AsyncMock()
+        
+        # Mock the Beanie query mechanism properly
+        mock_deployment_class = AsyncMock()
+        mock_deployment_class.find_one = mock_find_one
+        monkeypatch.setattr("app.backend.services.deployment_status_update_service.Deployment", mock_deployment_class)
+        
+        await status_update_service.process_heartbeat_message(
+            "test_key", sample_success_message, {}
+        )
+        
+        # Verify the deployment was updated correctly
+        assert mock_deployment.deployment_status == "succeeded"
+        assert mock_deployment.deployment_stage == "completed"
+        assert mock_deployment.deployment_app_url == "https://my-app-alpha.freeleaps.com"
+        mock_deployment.save.assert_called_once()
+
+    @pytest.mark.asyncio
+    async def test_process_failed_heartbeat_message(self, status_update_service, sample_failed_message, mock_deployment, monkeypatch):
+        """Test processing a failed status heartbeat"""
+        async def mock_find_one(query):
+            _ = query  # Parameter required by interface but not used in mock
+            return mock_deployment
+        
+        # Mock the logger methods
+        status_update_service.module_logger.log_info = AsyncMock()
+        status_update_service.module_logger.log_warning = AsyncMock()
+        status_update_service.module_logger.log_error = AsyncMock()
+        status_update_service.module_logger.log_exception = AsyncMock()
+        
+        # Mock the Beanie query mechanism properly
+        mock_deployment_class = AsyncMock()
+        mock_deployment_class.find_one = mock_find_one
+        monkeypatch.setattr("app.backend.services.deployment_status_update_service.Deployment", mock_deployment_class)
+        
+        await status_update_service.process_heartbeat_message(
+            "test_key", sample_failed_message, {}
+        )
+        
+        # Verify the deployment was updated correctly
+        assert mock_deployment.deployment_status == "failed"
+        assert mock_deployment.deployment_stage == "build"
+        mock_deployment.save.assert_called_once()
+
+    @pytest.mark.asyncio
+    async def test_deployment_not_found(self, status_update_service, sample_heartbeat_message, monkeypatch):
+        """Test handling when deployment is not found"""
+        async def mock_find_one(query):
+            _ = query  # Parameter required by interface but not used in mock
+            return None
+        
+        # Mock the logger methods
+        status_update_service.module_logger.log_info = AsyncMock()
+        status_update_service.module_logger.log_warning = AsyncMock()
+        status_update_service.module_logger.log_error = AsyncMock()
+        status_update_service.module_logger.log_exception = AsyncMock()
+        
+        # Mock the Beanie query mechanism properly
+        mock_deployment_class = AsyncMock()
+        mock_deployment_class.find_one = mock_find_one
+        monkeypatch.setattr("app.backend.services.deployment_status_update_service.Deployment", mock_deployment_class)
+        
+        # Should not raise an exception
+        await status_update_service.process_heartbeat_message(
+            "test_key", sample_heartbeat_message, {}
+        )
+
+    @pytest.mark.asyncio
+    async def test_invalid_message_format(self, status_update_service):
+        """Test handling invalid message format"""
+        invalid_message = {"invalid": "format"}
+        
+        # Mock the logger methods
+        status_update_service.module_logger.log_info = AsyncMock()
+        status_update_service.module_logger.log_warning = AsyncMock()
+        status_update_service.module_logger.log_error = AsyncMock()
+        status_update_service.module_logger.log_exception = AsyncMock()
+        
+        # Should not raise an exception due to try/catch in the method
+        await status_update_service.process_heartbeat_message(
+            "test_key", invalid_message, {}
+        )
\ No newline at end of file
diff --git a/apps/devops/tests/test_main.http b/apps/devops/tests/test_main.http
new file mode 100644
index 0000000..b847198
--- /dev/null
+++ b/apps/devops/tests/test_main.http
@@ -0,0 +1,8 @@
+# Test your FastAPI endpoints
+
+GET http://localhost:8000/api/hello_world/
+Accept: application/json
+
+###
+POST http://localhost:8000/api/hello_world/insert?msg=Hello%20World
+Accept: application/json
diff --git a/apps/helloworld/README.md b/apps/helloworld/README.md
new file mode 100644
index 0000000..2fb84b3
--- /dev/null
+++ b/apps/helloworld/README.md
@@ -0,0 +1,20 @@
+This is a template backend service based on fastapi + mongodb app
+
+To start development in local, go to the root directory of the project YOUR_WORKSPACE_PATH/helloworld/
+```bash
+docker compose -f app/scripts/mongodb/docker-compose.yml up -d
+```
+
+Then run the app
+```bash
+uvicorn app.main:app --reload
+```
+
+In case a new dependency is added, run the following command to update the requirements.txt file
+```bash
+# optional: if you have not installed pipreqs
+pip3 install pipreqs
+
+# generate requirements.txt
+pipreqs . --force
+```
diff --git a/apps/helloworld/app/__init__.py b/apps/helloworld/app/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/bootstrap/__init__.py b/apps/helloworld/app/bootstrap/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/bootstrap/application.py b/apps/helloworld/app/bootstrap/application.py
new file mode 100644
index 0000000..24223b6
--- /dev/null
+++ b/apps/helloworld/app/bootstrap/application.py
@@ -0,0 +1,82 @@
+import logging
+from fastapi import FastAPI
+from fastapi.openapi.utils import get_openapi
+
+from app.providers import common
+from app.providers.logger import register_logger
+from app.providers import router
+from app.providers import database
+from app.providers import metrics
+from app.providers import probes
+from app.providers import exception_handler
+from app.common.config.app_settings import app_settings
+
+def create_app() -> FastAPI:
+    logging.info("App initializing")
+
+    app = FreeleapsApp()
+
+    register_logger()
+    register(app, exception_handler)
+    register(app, database)
+    register(app, router)
+    # register(app, scheduler)
+    register(app, common)
+
+    # Call the custom_openapi function to change the OpenAPI version
+    customize_openapi_security(app)
+    # Register probe APIs if enabled
+    if app_settings.PROBES_ENABLED:
+        register(app, probes)
+    
+    # Register metrics APIs if enabled
+    if app_settings.METRICS_ENABLED:
+        register(app, metrics)
+    return app
+
+
+# This function overrides the OpenAPI schema version to 3.0.0
+def customize_openapi_security(app: FastAPI) -> None:
+
+    def custom_openapi():
+        if app.openapi_schema:
+            return app.openapi_schema
+
+        # Generate OpenAPI schema
+        openapi_schema = get_openapi(
+            title="FreeLeaps API",
+            version="3.1.0",
+            description="FreeLeaps API Documentation",
+            routes=app.routes,
+        )
+
+        # Ensure the components section exists in the OpenAPI schema
+        if "components" not in openapi_schema:
+            openapi_schema["components"] = {}
+
+        # Add security scheme to components
+        openapi_schema["components"]["securitySchemes"] = {
+            "bearerAuth": {"type": "http", "scheme": "bearer", "bearerFormat": "JWT"}
+        }
+
+        # Add security requirement globally
+        openapi_schema["security"] = [{"bearerAuth": []}]
+
+        app.openapi_schema = openapi_schema
+        return app.openapi_schema
+
+    app.openapi = custom_openapi
+
+
+def register(app, provider):
+    logging.info(provider.__name__ + " registering")
+    provider.register(app)
+
+
+def boot(app, provider):
+    logging.info(provider.__name__ + " booting")
+    provider.boot(app)
+
+class FreeleapsApp(FastAPI):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
diff --git a/apps/helloworld/app/common/__init__.py b/apps/helloworld/app/common/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/common/config/__init__.py b/apps/helloworld/app/common/config/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/common/config/app_settings.py b/apps/helloworld/app/common/config/app_settings.py
new file mode 100644
index 0000000..9a73bcb
--- /dev/null
+++ b/apps/helloworld/app/common/config/app_settings.py
@@ -0,0 +1,29 @@
+from pydantic_settings import BaseSettings
+
+# NOTE: The values fall backs to your environment variables when not set here
+class AppSettings(BaseSettings):
+    NAME: str = "YOUR_APP_NAME"
+    APP_NAME: str = NAME
+    APP_ENV: str = "alpha"
+
+    JWT_SECRET_KEY: str = ""
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 3600
+    REFRESH_TOKEN_EXPIRE_DAYS: int = 1
+
+    METRICS_ENABLED: bool = False
+    PROBES_ENABLED: bool = True
+
+    APP_MONGODB_URI: str = "mongodb://localhost:27017"
+    APP_MONGODB_NAME: str = "testdb"
+
+    LOG_BASE_PATH: str = "./log"
+    BACKEND_LOG_FILE_NAME: str = APP_NAME
+    APPLICATION_ACTIVITY_LOG: str = APP_NAME + "-application-activity"
+
+
+    class Config:
+        env_file = ".myapp.env"
+        env_file_encoding = "utf-8"
+
+
+app_settings = AppSettings()
diff --git a/apps/helloworld/app/common/config/log_settings.py b/apps/helloworld/app/common/config/log_settings.py
new file mode 100644
index 0000000..2f6985c
--- /dev/null
+++ b/apps/helloworld/app/common/config/log_settings.py
@@ -0,0 +1,16 @@
+import os
+from dataclasses import dataclass
+from .app_settings import app_settings
+
+@dataclass
+class LogSettings:
+    LOG_PATH_BASE: str = app_settings.LOG_BASE_PATH
+    LOG_RETENTION: str = os.environ.get("LOG_RETENTION", "30 days")
+    LOG_ROTATION: str = os.environ.get("LOG_ROTATION", "00:00")  # midnight
+    MAX_BACKUP_FILES: int = int(os.environ.get("LOG_BACKUP_FILES", 5))
+    LOG_ROTATION_BYTES: int = int(os.environ.get("LOG_ROTATION_BYTES", 10 * 1024 * 1024))  # 10 MB
+    APP_NAME: str = app_settings.APP_NAME
+    ENVIRONMENT: str = app_settings.APP_ENV
+
+
+log_settings = LogSettings()
diff --git a/apps/helloworld/app/common/config/site_settings.py b/apps/helloworld/app/common/config/site_settings.py
new file mode 100644
index 0000000..76e5af1
--- /dev/null
+++ b/apps/helloworld/app/common/config/site_settings.py
@@ -0,0 +1,27 @@
+import os
+
+from pydantic_settings import BaseSettings
+
+
+# NOTE: The values fall backs to your environment variables when not set here
+class SiteSettings(BaseSettings):
+    NAME: str = "appname"
+    DEBUG: bool = True
+
+    ENV: str = "dev"
+
+    SERVER_HOST: str = "localhost"
+    SERVER_PORT: int = 8000
+
+    URL: str = "http://localhost"
+    TIME_ZONE: str = "UTC"
+
+    BASE_PATH: str = os.path.dirname(os.path.dirname((os.path.abspath(__file__))))
+
+    class Config:
+        env_file = ".devbase-webapi.env"
+        env_file_encoding = "utf-8"
+
+
+site_settings = SiteSettings()
+
diff --git a/apps/helloworld/app/common/daos/__init__.py b/apps/helloworld/app/common/daos/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/common/daos/hello_world/__init__.py b/apps/helloworld/app/common/daos/hello_world/__init__.py
new file mode 100644
index 0000000..463a9cb
--- /dev/null
+++ b/apps/helloworld/app/common/daos/hello_world/__init__.py
@@ -0,0 +1,6 @@
+from app.common.daos.hello_world.hello_world_dao import HelloWorldDao
+
+hello_world_dao = HelloWorldDao()
+
+def get_hello_world_dao() -> HelloWorldDao:
+    return hello_world_dao
diff --git a/apps/helloworld/app/common/daos/hello_world/hello_world_dao.py b/apps/helloworld/app/common/daos/hello_world/hello_world_dao.py
new file mode 100644
index 0000000..3b3a112
--- /dev/null
+++ b/apps/helloworld/app/common/daos/hello_world/hello_world_dao.py
@@ -0,0 +1,30 @@
+from app.common.models.hello_world.hello_world import HelloWorld
+
+class HelloWorldDao:
+    def __init__(self):
+        pass
+
+    async def create_hello_world(self, message: str, count: int):
+        hello_world = HelloWorld(message=message, count=count)
+        await hello_world.insert()
+        return hello_world
+
+    async def get_hello_world(self, id: str):
+        hello_world = await HelloWorld.get(id)
+        return hello_world
+
+    async def update_hello_world(self, id: str, message: str, count: int):
+        hello_world = await HelloWorld.get(id)
+        if hello_world:
+            hello_world.message = message
+            hello_world.count = count
+            await hello_world.save()
+            return hello_world
+        return None
+
+    async def delete_hello_world(self, id: str):
+        hello_world = await HelloWorld.get(id)
+        if hello_world:
+            await hello_world.delete()
+            return True
+        return False
\ No newline at end of file
diff --git a/apps/helloworld/app/common/log/__init__.py b/apps/helloworld/app/common/log/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/common/log/application_logger.py b/apps/helloworld/app/common/log/application_logger.py
new file mode 100644
index 0000000..896c044
--- /dev/null
+++ b/apps/helloworld/app/common/log/application_logger.py
@@ -0,0 +1,12 @@
+from .base_logger import LoggerBase
+from app.common.config.app_settings import app_settings
+
+class ApplicationLogger(LoggerBase):
+    def __init__(self, application_activities: dict[str, any] = {}) -> None:
+        extra_fileds = {}
+        if application_activities:
+            extra_fileds.update(application_activities)
+        super().__init__(
+            logger_name=app_settings.APPLICATION_ACTIVITY_LOG,
+            extra_fileds=extra_fileds,
+        )
diff --git a/apps/helloworld/app/common/log/base_logger.py b/apps/helloworld/app/common/log/base_logger.py
new file mode 100644
index 0000000..a370296
--- /dev/null
+++ b/apps/helloworld/app/common/log/base_logger.py
@@ -0,0 +1,136 @@
+from loguru import logger as guru_logger
+from app.common.config.log_settings import log_settings
+from typing import Dict, Any, Optional
+import socket
+import json
+import threading
+import os
+import sys
+import inspect
+import logging
+
+from app.common.log.json_sink import JsonSink
+
+class LoggerBase:
+    binded_loggers = {}
+    logger_lock = threading.Lock()
+
+    def __init__(self, logger_name: str, extra_fileds: dict[str, any]) -> None:
+        self.__logger_name = logger_name
+        self.extra_fileds = extra_fileds
+        with LoggerBase.logger_lock:
+            if self.__logger_name in LoggerBase.binded_loggers:
+                self.logger = LoggerBase.binded_loggers[self.__logger_name]
+                return
+
+        log_filename = f"{log_settings.LOG_PATH_BASE}/{self.__logger_name}.log"
+        log_level = "INFO"
+        rotation_bytes = int(log_settings.LOG_ROTATION_BYTES or 10 * 1024 * 1024)
+
+        guru_logger.remove()
+
+        file_sink = JsonSink(
+            log_file_path=log_filename, 
+            rotation_size_bytes=rotation_bytes,
+            max_backup_files=log_settings.MAX_BACKUP_FILES
+            )
+        guru_logger.add(
+            sink=file_sink,
+            level=log_level,
+            filter=lambda record: record["extra"].get("topic") == self.__logger_name,
+        )
+
+        guru_logger.add(
+            sink=sys.stderr,
+            level=log_level,
+            format="{level} - {time:YYYY-MM-DD HH:mm:ss} - <{extra[log_file]}:{extra[log_line]}> - {extra[properties_str]} - {message}",
+            filter=lambda record: record["extra"].get("topic") == self.__logger_name,
+        )
+
+        host_name = socket.gethostname()
+        host_ip = socket.gethostbyname(host_name)
+        self.logger = guru_logger.bind(
+            topic=self.__logger_name,
+            host_ip=host_ip,
+            host_name=host_name,
+            app=log_settings.APP_NAME,
+            env=log_settings.ENVIRONMENT,
+        )
+        with LoggerBase.logger_lock:
+            LoggerBase.binded_loggers[self.__logger_name] = self.logger
+
+    def _get_log_context(self) -> dict:
+        frame = inspect.currentframe().f_back.f_back
+        filename = os.path.basename(frame.f_code.co_filename)
+        lineno = frame.f_lineno
+        return {"log_file": filename, "log_line": lineno}
+
+    def _prepare_properties(self, properties: Optional[Dict[str, Any]]) -> Dict[str, Any]:
+        props = {} if properties is None else properties.copy()
+        props_str = json.dumps(props, ensure_ascii=False) if props else "{}"
+        return props, props_str
+
+    async def log_event(self, sender_id: str, receiver_id: str, subject: str, event: str, properties: dict[str, any], text: str = "") -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event=event, properties=props, properties_str=props_str, **context)
+        local_logger.info(text)
+
+    async def log_exception(self, sender_id: str, receiver_id: str, subject: str, exception: Exception, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="exception", properties=props, properties_str=props_str, exception=exception, **context)
+        local_logger.exception(text)
+
+    async def log_info(self, sender_id: str, receiver_id: str, subject: str, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="information", properties=props, properties_str=props_str, **context)
+        local_logger.info(text)
+
+    async def log_warning(self, sender_id: str, receiver_id: str, subject: str, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="warning", properties=props, properties_str=props_str, **context)
+        local_logger.warning(text)
+
+    async def log_error(self, sender_id: str, receiver_id: str, subject: str, text: str = "", properties: dict[str, any] = None) -> None:
+        props, props_str = self._prepare_properties(properties)
+        context = self._get_log_context()
+        local_logger = self.logger.bind(sender_id=sender_id, receiver_id=receiver_id, subject=subject, event="error", properties=props, properties_str=props_str, **context)
+        local_logger.error(text)
+
+    @staticmethod
+    def configure_uvicorn_logging():
+        print("📢 Setting up uvicorn logging interception...")
+
+        # Intercept logs from these loggers
+        intercept_loggers = ["uvicorn", "uvicorn.access", "uvicorn.error", "fastapi"]
+
+        class InterceptHandler(logging.Handler):
+            def emit(self, record):
+                level = (
+                    guru_logger.level(record.levelname).name
+                    if guru_logger.level(record.levelname, None)
+                    else record.levelno
+                )
+                frame, depth = logging.currentframe(), 2
+                while frame.f_code.co_filename == logging.__file__:
+                    frame = frame.f_back
+                    depth += 1
+
+                guru_logger.opt(depth=depth, exception=record.exc_info).log(
+                    level,
+                    f"[{record.name}] {record.getMessage()}",
+                )
+
+        # Replace default handlers
+        logging.root.handlers.clear()
+        logging.root.setLevel(logging.INFO)
+        logging.root.handlers = [InterceptHandler()]
+
+        # Configure specific uvicorn loggers
+        for logger_name in intercept_loggers:
+            logging_logger = logging.getLogger(logger_name)
+            logging_logger.handlers.clear()  # Remove default handlers
+            logging_logger.propagate = True  # Ensure propagation through Loguru
diff --git a/apps/helloworld/app/common/log/json_sink.py b/apps/helloworld/app/common/log/json_sink.py
new file mode 100644
index 0000000..a798156
--- /dev/null
+++ b/apps/helloworld/app/common/log/json_sink.py
@@ -0,0 +1,85 @@
+import json
+import datetime
+import traceback
+from pathlib import Path
+from typing import Optional
+
+class JsonSink:
+    def __init__(
+        self,
+        log_file_path: str,
+        rotation_size_bytes: int = 10 * 1024 * 1024,
+        max_backup_files: int = 5,
+    ):
+        self.log_file_path = Path(log_file_path)
+        self.rotation_size = rotation_size_bytes
+        self.max_backup_files = max_backup_files
+        self._open_log_file()
+
+    def _open_log_file(self):
+        # ensure the parent directory exists
+        parent_dir = self.log_file_path.parent
+        if not parent_dir.exists():
+            parent_dir.mkdir(parents=True, exist_ok=True)
+        self.log_file = self.log_file_path.open("a", encoding="utf-8")
+
+    def _should_rotate(self) -> bool:
+        return self.log_file_path.exists() and self.log_file_path.stat().st_size >= self.rotation_size
+
+    def _rotate(self):
+        self.log_file.close()
+        timestamp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
+        rotated_path = self.log_file_path.with_name(f"{self.log_file_path.stem}_{timestamp}{self.log_file_path.suffix}")
+        self.log_file_path.rename(rotated_path)
+        self._cleanup_old_backups()
+        self._open_log_file()
+
+    def _cleanup_old_backups(self):
+        parent = self.log_file_path.parent
+        stem = self.log_file_path.stem
+        suffix = self.log_file_path.suffix
+
+        backup_files = sorted(
+            parent.glob(f"{stem}_*{suffix}"),
+            key=lambda p: p.stat().st_mtime,
+            reverse=True,
+        )
+
+        for old_file in backup_files[self.max_backup_files:]:
+            try:
+                old_file.unlink()
+            except Exception as e:
+                print(f"Failed to delete old backup {old_file}: {e}")
+
+    def __call__(self, message):
+        record = message.record
+        if self._should_rotate():
+            self._rotate()
+
+        log_entry = {
+            "level": record["level"].name.lower(),
+            "timestamp": int(record["time"].timestamp() * 1000),
+            "text": record["message"],
+            "fields": record["extra"].get("properties", {}),
+            "context": {
+                "app": record["extra"].get("app"),
+                "env": record["extra"].get("env"),
+                "log_file": record["extra"].get("log_file"),
+                "log_line": record["extra"].get("log_line"),
+                "topic": record["extra"].get("topic"),
+                "sender_id": record["extra"].get("sender_id"),
+                "receiver_id": record["extra"].get("receiver_id"),
+                "subject": record["extra"].get("subject"),
+                "event": record["extra"].get("event"),
+                "host_ip": record["extra"].get("host_ip"),
+                "host_name": record["extra"].get("host_name"),
+            },
+            "stacktrace": None
+        }
+
+        if record["exception"]:
+            exc_type, exc_value, exc_tb = record["exception"]
+            log_entry["stacktrace"] = traceback.format_exception(exc_type, exc_value, exc_tb)
+
+        self.log_file.write(json.dumps(log_entry, ensure_ascii=False) + "\n")
+        self.log_file.flush()
diff --git a/apps/helloworld/app/common/models/__init__.py b/apps/helloworld/app/common/models/__init__.py
new file mode 100644
index 0000000..2535cbb
--- /dev/null
+++ b/apps/helloworld/app/common/models/__init__.py
@@ -0,0 +1,4 @@
+from app.common.models.hello_world.hello_world import HelloWorld
+
+# list of beanie document models
+db_models = [HelloWorld]
\ No newline at end of file
diff --git a/apps/helloworld/app/common/models/hello_world/__init__.py b/apps/helloworld/app/common/models/hello_world/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/common/models/hello_world/hello_world.py b/apps/helloworld/app/common/models/hello_world/hello_world.py
new file mode 100644
index 0000000..55000c7
--- /dev/null
+++ b/apps/helloworld/app/common/models/hello_world/hello_world.py
@@ -0,0 +1,17 @@
+from datetime import datetime
+
+from beanie import Document
+
+
+class HelloWorld(Document):
+    message: str
+    count: int = 0
+    created_time: datetime = datetime.now()
+
+    class Settings:
+        name = "hello_world"
+        indexes = [
+            [("message", 1), ("count", 1)]
+        ]
+
+
diff --git a/apps/helloworld/app/common/probes/__init__.py b/apps/helloworld/app/common/probes/__init__.py
new file mode 100644
index 0000000..4071df8
--- /dev/null
+++ b/apps/helloworld/app/common/probes/__init__.py
@@ -0,0 +1,140 @@
+import logging
+from enum import Enum
+from typing import Optional, Callable, Tuple, Dict
+import inspect
+from datetime import datetime, timezone
+
+# ProbeType is an Enum that defines the types of probes that can be registered.
+class ProbeType(Enum):
+  LIVENESS = "liveness"
+  READINESS = "readiness"
+  STARTUP = "startup"
+
+# ProbeResult is a class that represents the result of a probe check.
+class ProbeResult:
+  def __init__(self, success: bool, message: str = "ok", data: Optional[dict] = None):
+    self.success = success
+    self.message = message
+    self.data = data or {}
+
+  def to_dict(self) -> dict:
+    return {
+      "success": self.success,
+      "message": self.message,
+      "data": self.data
+    }
+
+# Probe is a class that represents a probe that can be registered.
+class Probe:
+  def __init__(self, type: ProbeType, path: str, check_fn: Callable, name: Optional[str] = None):
+    self.type = type
+    self.path = path
+    self.check_fn = check_fn
+    self.name = name or f"{type.value}-{id(self)}"
+
+  async def execute(self) -> ProbeResult:
+    try:
+      result = self.check_fn()
+      if inspect.isawaitable(result):
+        result = await result
+      
+      if isinstance(result, ProbeResult):
+        return result
+      elif isinstance(result, bool):
+        return ProbeResult(result, "ok" if result else "failed")
+      else:
+        return ProbeResult(True, "ok")
+    except Exception as e:
+      return ProbeResult(False, str(e))
+
+# ProbeGroup is a class that represents a group of probes that can be checked together.
+class ProbeGroup:
+    def __init__(self, path: str):
+        self.path = path
+        self.probes: Dict[str, Probe] = {}
+
+    def add_probe(self, probe: Probe):
+        self.probes[probe.name] = probe
+
+    async def check_all(self) -> Tuple[bool, dict]:
+        results = {}
+        all_success = True
+        
+        for name, probe in self.probes.items():
+            result = await probe.execute()
+            results[name] = result.to_dict()
+            if not result.success:
+                all_success = False
+                
+        return all_success, results
+
+# FrameworkAdapter is an abstract class that defines the interface for framework-specific probe adapters.
+class FrameworkAdapter:
+    async def handle_request(self, group: ProbeGroup):
+        all_success, results = await group.check_all()
+        status_code = 200 if all_success else 503
+        return {"status": "ok" if all_success else "failed", "payload": results, "timestamp": int(datetime.now(timezone.utc).timestamp())}, status_code
+
+    def register_route(self, path: str, handler: Callable):
+        raise NotImplementedError
+
+# ProbeManager is a class that manages the registration of probes and their corresponding framework adapters.
+class ProbeManager:
+    _default_paths = {
+        ProbeType.LIVENESS: "/_/livez",
+        ProbeType.READINESS: "/_/readyz",
+        ProbeType.STARTUP: "/_/healthz"
+    }
+
+    def __init__(self):
+        self.groups: Dict[str, ProbeGroup] = {}
+        self.adapters: Dict[str, FrameworkAdapter] = {}
+        self._startup_complete = False
+
+    def register_adapter(self, framework: str, adapter: FrameworkAdapter):
+        self.adapters[framework] = adapter
+        logging.info(f"Registered probe adapter ({adapter}) for framework: {framework}")
+        
+    def register(
+        self,
+        type: ProbeType,
+        check_func: Optional[Callable] = None,
+        path: Optional[str] = None,
+        prefix: str = "",
+        name: Optional[str] = None,
+        frameworks: Optional[list] = None
+    ):
+        path = path or self._default_paths.get(type, "/_/healthz")
+        if prefix:
+            path = f"{prefix}{path}"
+        
+        if type == ProbeType.STARTUP and check_func is None:
+            check_func = self._default_startup_check
+
+        probe = Probe(type, path, check_func or (lambda: True), name)
+
+        if path not in self.groups:
+            self.groups[path] = ProbeGroup(path)
+        self.groups[path].add_probe(probe)
+
+        for framework in (frameworks or ["default"]):
+            self._register_route(framework, path)
+            logging.info(f"Registered {type.value} probe route ({path}) for framework: {framework}")
+
+    def _register_route(self, framework: str, path: str):
+        if framework not in self.adapters:
+            return
+
+        adapter = self.adapters[framework]
+        group = self.groups[path]
+
+        async def handler():
+            return await adapter.handle_request(group)
+
+        adapter.register_route(path, handler)
+
+    def _default_startup_check(self) -> bool:
+        return self._startup_complete
+
+    def mark_startup_complete(self):
+        self._startup_complete = True
\ No newline at end of file
diff --git a/apps/helloworld/app/common/probes/adapters.py b/apps/helloworld/app/common/probes/adapters.py
new file mode 100644
index 0000000..2ecd38a
--- /dev/null
+++ b/apps/helloworld/app/common/probes/adapters.py
@@ -0,0 +1,15 @@
+from . import FrameworkAdapter
+from fastapi.responses import JSONResponse
+from typing import Callable
+
+# FastAPIAdapter is a class that implements the FrameworkAdapter interface for FastAPI.
+class FastAPIAdapter(FrameworkAdapter):
+    def __init__(self, app):
+        self.app = app
+
+    def register_route(self,path: str, handler: Callable):
+        async def wrapper():
+            data, status_code = await handler()
+            return JSONResponse(content=data, status_code=status_code)
+        
+        self.app.add_api_route(path, wrapper, methods=["GET"])
diff --git a/apps/helloworld/app/envs/alpha.yml b/apps/helloworld/app/envs/alpha.yml
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/envs/prod.yml b/apps/helloworld/app/envs/prod.yml
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/main.py b/apps/helloworld/app/main.py
new file mode 100644
index 0000000..559d7ed
--- /dev/null
+++ b/apps/helloworld/app/main.py
@@ -0,0 +1,16 @@
+from fastapi.responses import RedirectResponse
+from app.common.config.site_settings import site_settings
+from app.bootstrap.application import create_app
+
+app = create_app()
+
+@app.get("/", status_code=301)
+async def root():
+    """
+    TODO: redirect client to /doc#
+    """
+    return RedirectResponse("docs")
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run("main:app", host=site_settings.SERVER_HOST, port=site_settings.SERVER_PORT, reload=True)
\ No newline at end of file
diff --git a/apps/helloworld/app/providers/__init__.py b/apps/helloworld/app/providers/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/app/providers/common.py b/apps/helloworld/app/providers/common.py
new file mode 100644
index 0000000..64a9a44
--- /dev/null
+++ b/apps/helloworld/app/providers/common.py
@@ -0,0 +1,31 @@
+from fastapi.middleware.cors import CORSMiddleware
+from app.common.config.site_settings import site_settings
+
+
+def register(app):
+    app.debug = site_settings.DEBUG
+    app.title = site_settings.NAME
+
+    add_global_middleware(app)
+
+    # This hook ensures that a connection is opened to handle any queries
+    # generated by the request.
+    @app.on_event("startup")
+    def startup():
+        pass
+
+    # This hook ensures that the connection is closed when we've finished
+    # processing the request.
+    @app.on_event("shutdown")
+    def shutdown():
+        pass
+
+
+def add_global_middleware(app):
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
diff --git a/apps/helloworld/app/providers/database.py b/apps/helloworld/app/providers/database.py
new file mode 100644
index 0000000..8716b8e
--- /dev/null
+++ b/apps/helloworld/app/providers/database.py
@@ -0,0 +1,34 @@
+import asyncio
+from app.common.config.app_settings import app_settings
+from beanie import init_beanie
+from motor.motor_asyncio import AsyncIOMotorClient
+from app.common.models import db_models
+from app.common.probes import ProbeResult
+
+client = AsyncIOMotorClient(
+    app_settings.APP_MONGODB_URI,
+    serverSelectionTimeoutMS=60000,
+    minPoolSize=5,  # Minimum number of connections in the pool
+    maxPoolSize=20,  # Maximum number of connections in the pool
+)
+
+def register(app):
+    app.debug = "auth_mongo_debug"
+    app.title = "auth_mongo_name"
+
+    @app.on_event("startup")
+    async def start_database():
+        await initiate_database()
+
+async def check_database_initialized() -> ProbeResult:
+    try:
+        await asyncio.wait_for(client.server_info(), timeout=5)
+        return ProbeResult(success=True, message="service has been initialized and ready to serve")
+    except Exception:
+        return ProbeResult(success=False, message="service is not initialized yet", data={"error": "database is not ready"})
+
+
+async def initiate_database():
+    await init_beanie(
+        database=client[app_settings.APP_MONGODB_NAME], document_models=db_models
+    )
diff --git a/apps/helloworld/app/providers/exception_handler.py b/apps/helloworld/app/providers/exception_handler.py
new file mode 100644
index 0000000..21117a5
--- /dev/null
+++ b/apps/helloworld/app/providers/exception_handler.py
@@ -0,0 +1,39 @@
+from fastapi import FastAPI, HTTPException
+from fastapi.exceptions import RequestValidationError
+from starlette.requests import Request
+from starlette.responses import JSONResponse
+from starlette.status import (
+    HTTP_400_BAD_REQUEST,
+    HTTP_401_UNAUTHORIZED,
+    HTTP_403_FORBIDDEN,
+    HTTP_404_NOT_FOUND,
+    HTTP_422_UNPROCESSABLE_ENTITY,
+    HTTP_500_INTERNAL_SERVER_ERROR,
+)
+
+
+async def custom_http_exception_handler(request: Request, exc: HTTPException):
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={"error": exc.detail},
+    )
+
+
+
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    return JSONResponse(
+        status_code=HTTP_400_BAD_REQUEST,
+        content={"error": str(exc)},
+    )
+
+async def exception_handler(request: Request, exc: Exception):
+    return JSONResponse(
+        status_code=HTTP_500_INTERNAL_SERVER_ERROR,
+        content={"error": str(exc)},
+    )
+
+
+def register(app: FastAPI):
+    app.add_exception_handler(HTTPException, custom_http_exception_handler)
+    app.add_exception_handler(RequestValidationError, validation_exception_handler)
+    app.add_exception_handler(Exception, exception_handler)
diff --git a/apps/helloworld/app/providers/logger.py b/apps/helloworld/app/providers/logger.py
new file mode 100644
index 0000000..2785603
--- /dev/null
+++ b/apps/helloworld/app/providers/logger.py
@@ -0,0 +1,7 @@
+from app.common.log.base_logger import LoggerBase
+
+
+def register_logger():
+    print("📢 Setting up logging interception...")
+    LoggerBase.configure_uvicorn_logging()
+    print("✅ Logging interception complete. Logs are formatted and deduplicated!")
diff --git a/apps/helloworld/app/providers/metrics.py b/apps/helloworld/app/providers/metrics.py
new file mode 100644
index 0000000..1ae941a
--- /dev/null
+++ b/apps/helloworld/app/providers/metrics.py
@@ -0,0 +1,16 @@
+import logging
+from prometheus_fastapi_instrumentator import Instrumentator
+from app.common.config.app_settings import app_settings
+
+def register(app):
+  instrumentator = (
+      Instrumentator().instrument(
+        app,
+        metric_namespace="freeleaps",
+        metric_subsystem=app_settings.APP_NAME)
+  )
+
+  @app.on_event("startup")
+  async def startup():
+    instrumentator.expose(app, endpoint="/api/_/metrics", should_gzip=True)
+    logging.info("Metrics endpoint exposed at /api/_/metrics")
\ No newline at end of file
diff --git a/apps/helloworld/app/providers/probes.py b/apps/helloworld/app/providers/probes.py
new file mode 100644
index 0000000..883e3d6
--- /dev/null
+++ b/apps/helloworld/app/providers/probes.py
@@ -0,0 +1,25 @@
+from app.common.probes import ProbeManager, ProbeType
+from app.common.probes.adapters import FastAPIAdapter
+from .database import check_database_initialized
+
+def register(app):
+    probes_manager = ProbeManager()
+    probes_manager.register_adapter("fastapi", FastAPIAdapter(app))
+
+    async def readiness_checker():
+        return await check_database_initialized()
+
+    probes_manager.register(
+        name="readiness",
+        prefix="/api",
+        type=ProbeType.READINESS,
+        check_func=readiness_checker,
+        frameworks=["fastapi"]
+    )
+
+    probes_manager.register(name="liveness", prefix="/api", type=ProbeType.LIVENESS, frameworks=["fastapi"])
+    probes_manager.register(name="startup", prefix="/api", type=ProbeType.STARTUP, frameworks=["fastapi"])
+
+    @app.on_event("startup")
+    async def mark_startup_complete():
+        probes_manager.mark_startup_complete()
\ No newline at end of file
diff --git a/apps/helloworld/app/providers/router.py b/apps/helloworld/app/providers/router.py
new file mode 100644
index 0000000..b273eb8
--- /dev/null
+++ b/apps/helloworld/app/providers/router.py
@@ -0,0 +1,34 @@
+from app.routes import api_router
+
+from starlette import routing
+
+
+def register(app):
+    app.include_router(
+        api_router,
+        prefix="/api",
+        tags=["api"],
+        dependencies=[],
+        responses={404: {"description": "no page found"}},
+    )
+
+    if app.debug:
+        for route in app.routes:
+            if not isinstance(route, routing.WebSocketRoute):
+                print(
+                    {
+                        "path": route.path,
+                        "endpoint": route.endpoint,
+                        "name": route.name,
+                        "methods": route.methods,
+                    }
+                )
+            else:
+                print(
+                    {
+                        "path": route.path,
+                        "endpoint": route.endpoint,
+                        "name": route.name,
+                        "type": "web socket route",
+                    }
+                )
diff --git a/apps/helloworld/app/providers/scheduler.py b/apps/helloworld/app/providers/scheduler.py
new file mode 100644
index 0000000..7ea8d6c
--- /dev/null
+++ b/apps/helloworld/app/providers/scheduler.py
@@ -0,0 +1,8 @@
+import asyncio
+
+
+def register(app):
+    @app.on_event("startup")
+    async def start_scheduler():
+        #create your scheduler here
+        pass
diff --git a/apps/helloworld/app/routes/__init__.py b/apps/helloworld/app/routes/__init__.py
new file mode 100644
index 0000000..9644f27
--- /dev/null
+++ b/apps/helloworld/app/routes/__init__.py
@@ -0,0 +1,8 @@
+from fastapi import APIRouter
+from app.routes.hello_world import router as hello_world_router
+
+
+api_router = APIRouter()
+
+# TODO: add custom routers here
+api_router.include_router(hello_world_router, tags=["hello_world"])
diff --git a/apps/helloworld/app/routes/hello_world/__init__.py b/apps/helloworld/app/routes/hello_world/__init__.py
new file mode 100644
index 0000000..70ca8e2
--- /dev/null
+++ b/apps/helloworld/app/routes/hello_world/__init__.py
@@ -0,0 +1,7 @@
+from fastapi import APIRouter
+from .apis import router as hello_world_api
+
+
+router = APIRouter(prefix="/hello_world")
+
+router.include_router(hello_world_api, tags=["hello_world"])
diff --git a/apps/helloworld/app/routes/hello_world/apis.py b/apps/helloworld/app/routes/hello_world/apis.py
new file mode 100644
index 0000000..9f4902a
--- /dev/null
+++ b/apps/helloworld/app/routes/hello_world/apis.py
@@ -0,0 +1,25 @@
+from fastapi import APIRouter, Depends
+from loguru import logger
+
+from app.common.daos.hello_world import get_hello_world_dao, HelloWorldDao
+
+router = APIRouter()
+
+@router.get("/")
+async def hello_world():
+    logger.info("Hello, World! endpoint was called")
+    return {"message": "Hello, World!"}
+
+
+@router.post("/insert")
+async def insert_hello_world(msg: str, dao: HelloWorldDao = Depends(get_hello_world_dao)):
+    """
+    Insert a HelloWorld document into the database.
+    """
+    hello_world = await dao.create_hello_world(msg, 1)
+    return hello_world
+
+
+
+
+
diff --git a/apps/helloworld/app/scripts/mongodb/docker-compose.yml b/apps/helloworld/app/scripts/mongodb/docker-compose.yml
new file mode 100644
index 0000000..8ab07c7
--- /dev/null
+++ b/apps/helloworld/app/scripts/mongodb/docker-compose.yml
@@ -0,0 +1,18 @@
+version: '3.8'
+
+services:
+  mongodb:
+    image: mongo:6.0  # You can change to the desired version
+    container_name: mongodb
+    restart: unless-stopped
+    ports:
+      - "27017:27017"
+    environment:
+      MONGO_INITDB_DATABASE: testdb  # <-- This creates the initial database
+    volumes:
+      - mongodb_data:/data/db
+    command: ["mongod", "--noauth"]  # <-- Disable authentication
+
+
+volumes:
+  mongodb_data:
\ No newline at end of file
diff --git a/apps/helloworld/requirements.txt b/apps/helloworld/requirements.txt
new file mode 100644
index 0000000..056543d
--- /dev/null
+++ b/apps/helloworld/requirements.txt
@@ -0,0 +1,10 @@
+beanie==1.29.0
+fastapi==0.115.12
+loguru==0.7.3
+motor==3.7.0
+prometheus_fastapi_instrumentator==7.1.0
+pydantic_settings==2.9.1
+pytest==7.1.2
+starlette==0.46.2
+uvicorn==0.34.2
+httpx==0.24.0
\ No newline at end of file
diff --git a/apps/helloworld/tests/__init__.py b/apps/helloworld/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/tests/routes/__init__.py b/apps/helloworld/tests/routes/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/helloworld/tests/routes/test_hello_world.py b/apps/helloworld/tests/routes/test_hello_world.py
new file mode 100644
index 0000000..638a4b2
--- /dev/null
+++ b/apps/helloworld/tests/routes/test_hello_world.py
@@ -0,0 +1,27 @@
+from unittest.mock import AsyncMock, patch
+from fastapi.testclient import TestClient
+from app.main import app
+from app.routes.hello_world.apis import get_hello_world_dao
+
+
+def test_hello_world():
+    with TestClient(app) as client:
+        response = client.get("/api/hello_world/")
+        assert response.status_code == 200
+        assert response.json() == {"message": "Hello, World!"}
+
+
+# mock out initiate_database so it doesn’t run during tests
+@patch("app.providers.database.initiate_database", new_callable=AsyncMock)
+def test_insert_hello_world(mock_db_init):
+
+    class MockHelloWorldDao:
+        async def create_hello_world(self, msg: str, user_id: int):
+            return {"message": msg, "user_id": user_id}
+
+    app.dependency_overrides[get_hello_world_dao] = lambda: MockHelloWorldDao()
+    with TestClient(app) as client:
+        response = client.post("/api/hello_world/insert", params={"msg": "Test Message"})
+        assert response.status_code == 200
+        assert response.json() == {"message": "Test Message", "user_id": 1}
+    app.dependency_overrides.clear()
diff --git a/apps/helloworld/tests/test_main.http b/apps/helloworld/tests/test_main.http
new file mode 100644
index 0000000..b847198
--- /dev/null
+++ b/apps/helloworld/tests/test_main.http
@@ -0,0 +1,8 @@
+# Test your FastAPI endpoints
+
+GET http://localhost:8000/api/hello_world/
+Accept: application/json
+
+###
+POST http://localhost:8000/api/hello_world/insert?msg=Hello%20World
+Accept: application/json
diff --git a/apps/payment/backend/application/payment_hub.py b/apps/payment/backend/application/payment_hub.py
index 07cce96..8f18ba0 100644
--- a/apps/payment/backend/application/payment_hub.py
+++ b/apps/payment/backend/application/payment_hub.py
@@ -9,9 +9,6 @@ class PaymentHub:
         self.stripe_manager = StripeManager()
         return
 
-    async def fetch_wechat_qr_code(self, project_id: str) -> Optional[Dict[str, any]]:
-        return await self.payment_manager.fetch_wechat_qr_code(project_id)
-
     async def fetch_stripe_account_id(self, user_id: str) -> Optional[str]:
         return await self.payment_manager.fetch_stripe_account_id(user_id)
 
diff --git a/apps/payment/backend/business/payment_manager.py b/apps/payment/backend/business/payment_manager.py
index 6a5d6d3..bb2b955 100644
--- a/apps/payment/backend/business/payment_manager.py
+++ b/apps/payment/backend/business/payment_manager.py
@@ -9,18 +9,6 @@ class PaymentManager:
     def __init__(self) -> None:
         self.module_logger = ModuleLogger(sender_id=PaymentManager)
 
-    async def fetch_wechat_qr_code(self, project_id: str) -> Optional[Dict[str, any]]:
-        project = await ProjectDoc.get(project_id)
-        proposer = project.proposer_id
-        income_profile = await IncomeProfileDoc.find_one(
-            IncomeProfileDoc.user_id == proposer
-        )
-        if income_profile:
-            return income_profile.bank_account.money_collecting_methods[
-                0
-            ].wechat_qr_code
-        return None
-
     async def fetch_stripe_account_id(self, user_id: str) -> Optional[str]:
         income_profile = await IncomeProfileDoc.find_one(IncomeProfileDoc.user_id == user_id)
         if income_profile:
@@ -44,7 +32,7 @@ class PaymentManager:
                     }
                 }}
             )
-            
+
             if not payment_profile:
                 await self.module_logger.log_warning(
                     warning="No payment profile found for Stripe account",
@@ -54,7 +42,7 @@ class PaymentManager:
                     }
                 )
                 return False
-            
+
             # Update the stripe method status
             updated = False
             # Need to check if money_collecting_methods exists and is not empty
@@ -66,7 +54,7 @@ class PaymentManager:
                         method.last_update_time = int(datetime.now().timestamp())
                         updated = True
                         break  # Exit loop once found and updated
-                    
+
             if updated:
                 await payment_profile.save()
                 await self.module_logger.log_info(
@@ -79,7 +67,7 @@ class PaymentManager:
                     }
                 )
                 return True
-        
+
             # Log warning with more context
             await self.module_logger.log_warning(
                 warning="Stripe account not found in payment methods",
@@ -91,7 +79,7 @@ class PaymentManager:
                 }
             )
             return False
-            
+
         except Exception as e:
             await self.module_logger.log_exception(
                 exception=e,
diff --git a/apps/payment/backend/business/stripe_manager.py b/apps/payment/backend/business/stripe_manager.py
index 656f884..4503370 100644
--- a/apps/payment/backend/business/stripe_manager.py
+++ b/apps/payment/backend/business/stripe_manager.py
@@ -8,6 +8,7 @@ from stripe.error import SignatureVerificationError
 from common.log.module_logger import ModuleLogger
 from decimal import Decimal
 import json
+import httpx
 
 
 stripe.api_key = app_settings.STRIPE_API_KEY
@@ -39,7 +40,7 @@ class StripeManager:
                 redirect_url="{}/work".format(self.site_url_root)
             )
             return login_link.url
-        
+
         # Otherwise show onboarding
         account_link = stripe.AccountLink.create(
             account=account_id,
@@ -90,6 +91,10 @@ class StripeManager:
                 properties={"session_id": session_id},
             )
         elif len(transactions) == 0:
+            await self.module_logger.log_error(
+                error="No transaction found for session_id: {}".format(session_id),
+                properties={"session_id": session_id},
+            )
             return None
 
         return transactions[0]
@@ -203,19 +208,25 @@ class StripeManager:
                 transaction.stripe_price_id = price.id
                 await transaction.save()
 
-            payment_link = stripe.PaymentLink.create(
-                line_items=[
+            # Prepare payment link parameters with conditional application_fee_amount
+            payment_link_params = {
+                "line_items": [
                     {
                         "price": transaction.stripe_price_id,
                         "quantity": 1,
                     }
                 ],
-                application_fee_amount=transaction.application_fee_amount,
-                on_behalf_of=transaction.to_stripe_account_id,
-                transfer_data={
+                "on_behalf_of": transaction.to_stripe_account_id,
+                "transfer_data": {
                     "destination": transaction.to_stripe_account_id,
                 },
-            )
+            }
+
+            # Only add application_fee_amount if it's greater than 0
+            if transaction.application_fee_amount and transaction.application_fee_amount > 0:
+                payment_link_params["application_fee_amount"] = transaction.application_fee_amount
+
+            payment_link = stripe.PaymentLink.create(**payment_link_params)
 
             if payment_link:
                 transaction.stripe_payment_link = payment_link.url
@@ -276,27 +287,37 @@ class StripeManager:
                 transaction.stripe_price_id = price.id
                 await transaction.save()
 
-            session = stripe.checkout.Session.create(
-                payment_method_types=["card"],
-                line_items=[
+            # Prepare payment_intent_data with conditional application_fee_amount
+            payment_intent_data = {
+                "on_behalf_of": transaction.to_stripe_account_id,
+                "transfer_data": {
+                    "destination": transaction.to_stripe_account_id,
+                },
+            }
+
+            # Only add application_fee_amount if it's greater than 0
+            if transaction.application_fee_amount and transaction.application_fee_amount > 0:
+                payment_intent_data["application_fee_amount"] = transaction.application_fee_amount
+
+
+
+            session_params = {
+                "payment_method_types": ["card"],
+                "line_items": [
                     {
                         "price": transaction.stripe_price_id,
                         "quantity": 1,
                     }
                 ],
-                payment_intent_data={
-                    "on_behalf_of": transaction.to_stripe_account_id,
-                    "application_fee_amount": transaction.application_fee_amount,
-                    "transfer_data": {
-                        "destination": transaction.to_stripe_account_id,
-                    },
-                },
-                mode="payment",
-                success_url="{}/projects".format(
-                    self.site_url_root
-                ),  # needs to be set, local: http://localhost/
-                cancel_url="{}/projects".format(self.site_url_root),
-            )
+                "payment_intent_data": payment_intent_data,
+                "mode": "payment",
+                "success_url": "{}/projects".format(self.site_url_root),
+                "cancel_url": "{}/projects".format(self.site_url_root),
+            }
+
+
+
+            session = stripe.checkout.Session.create(**session_params)
 
             if session:
                 transaction.stripe_checkout_session_id = session.id
@@ -332,21 +353,211 @@ class StripeManager:
     async def invoke_checkout_session_webhook(
         self, event: dict
     ) -> Tuple[bool, Optional[str], Optional[str]]:
-        # Handle the checkout.session.completed event
+        """
+        Handle checkout.session.completed webhook events from Stripe.
+        Updates transaction status and saves payment method information for future use.
+        """
         if event["type"] == "checkout.session.completed":
             session = event["data"]["object"]
+
+            # Find and validate the transaction
             transaction = await self.__fetch_transaction_by_session_id(session["id"])
             if not transaction:
                 await self.module_logger.log_error(
                     error="Transaction not found for session_id: {}".format(session["id"]),
                     properties={"session_id": session["id"]},
                 )
-                return False
+                return False, None, None
 
-            transaction.status = TransactionStatus.COMPLETED
-            transaction.updated_time = datetime.now(timezone.utc)
-            await transaction.save()
+            # Update transaction status to completed
+            await self.__update_transaction_status(transaction)
+
+            # Process and save payment method information
+            await self.__process_payment_method(session, transaction)
 
             return True, transaction.project_id, transaction.milestone_index
 
         return False, None, None
+
+    async def __update_transaction_status(self, transaction: StripeTransactionDoc) -> None:
+        """
+        Update transaction status to completed and save to database.
+        """
+        transaction.status = TransactionStatus.COMPLETED
+        transaction.updated_time = datetime.now(timezone.utc)
+        await transaction.save()
+
+    async def __process_payment_method(self, session: dict, transaction: StripeTransactionDoc) -> None:
+        """
+        Extract payment method details from Stripe session and save to database.
+        Creates or finds customer and attaches payment method for future use.
+        """
+        try:
+            # Get payment method details from Stripe
+            payment_method_info = await self.__extract_payment_method_info(session)
+            if not payment_method_info:
+                return
+
+            payment_method_id, card_details = payment_method_info
+
+            # Get or create Stripe customer for the user
+            customer_id = await self.__get_or_create_customer(transaction.from_user)
+            if not customer_id:
+                return
+
+            # Attach payment method to customer and save to database
+            await self.__attach_and_save_payment_method(
+                payment_method_id, card_details, customer_id, transaction.from_user
+            )
+
+        except Exception as payment_method_error:
+            await self.module_logger.log_error(
+                error=f"Error processing payment method: {payment_method_error}",
+                properties={"session_id": session["id"], "user_id": transaction.from_user}
+            )
+
+    async def __extract_payment_method_info(self, session: dict) -> Optional[Tuple[str, dict]]:
+        """
+        Extract payment method ID and card details from Stripe session.
+        Returns tuple of (payment_method_id, card_details) or None if not found.
+        """
+        try:
+            # Get the Stripe session to extract payment method details
+            stripe_session = stripe.checkout.Session.retrieve(session["id"])
+            payment_intent_id = stripe_session.get('payment_intent')
+
+            if not payment_intent_id:
+                return None
+
+            payment_intent = stripe.PaymentIntent.retrieve(payment_intent_id)
+            payment_method_id = payment_intent.get('payment_method')
+
+            if not payment_method_id:
+                return None
+
+            payment_method = stripe.PaymentMethod.retrieve(payment_method_id)
+            card_details = payment_method.get('card', {})
+
+            return payment_method_id, card_details
+
+        except Exception as e:
+            await self.module_logger.log_error(
+                error=f"Error extracting payment method info: {e}",
+                properties={"session_id": session["id"]}
+            )
+            return None
+
+    async def __get_or_create_customer(self, user_id: str) -> Optional[str]:
+        """
+        Find existing Stripe customer by email or create new one.
+        Returns customer ID or None if creation fails.
+        """
+        try:
+            # Generate email for user (fallback since we don't have access to user profile)
+            user_email = f"user_{user_id}@freeleaps.com"
+
+            # Search for existing customers by email
+            customers = stripe.Customer.list(email=user_email, limit=1)
+            if customers.data:
+                return customers.data[0].id
+
+            # Create new customer if not found
+            customer = stripe.Customer.create(
+                email=user_email,
+                metadata={"user_id": user_id}
+            )
+            return customer.id
+
+        except Exception as customer_error:
+            await self.module_logger.log_error(
+                error=f"Error getting/creating customer: {customer_error}",
+                properties={"user_id": user_id}
+            )
+            return None
+
+    async def __attach_and_save_payment_method(
+        self, payment_method_id: str, card_details: dict, customer_id: str, user_id: str
+    ) -> None:
+        """
+        Attach payment method to Stripe customer and save details to database.
+        Handles various error scenarios gracefully.
+        """
+        try:
+            # Check if payment method is already attached to a customer
+            payment_method_obj = stripe.PaymentMethod.retrieve(payment_method_id)
+            if payment_method_obj.customer:
+                # Use the existing customer ID
+                customer_id = payment_method_obj.customer
+            else:
+                # Try to attach payment method to customer in Stripe
+                stripe.PaymentMethod.attach(
+                    payment_method_id,
+                    customer=customer_id
+                )
+
+            # Save to database
+            await self.__save_payment_method_to_db(
+                payment_method_id, card_details, customer_id, user_id
+            )
+
+        except stripe.error.InvalidRequestError as attach_error:
+            # Handle specific Stripe attachment errors
+            await self.__handle_attachment_error(
+                attach_error, payment_method_id, card_details, customer_id, user_id
+            )
+        except Exception as save_error:
+            await self.module_logger.log_error(
+                error=f"Error attaching payment method: {save_error}",
+                properties={"payment_method_id": payment_method_id, "user_id": user_id}
+            )
+
+    async def __save_payment_method_to_db(
+        self, payment_method_id: str, card_details: dict, customer_id: str, user_id: str
+    ) -> None:
+        """
+        Save payment method details to database if it doesn't already exist.
+        """
+        from backend.infra.payment.models import StripePaymentMethodDoc
+
+        # Check if payment method already exists in our database
+        existing_payment_method = await StripePaymentMethodDoc.find_one(
+            StripePaymentMethodDoc.stripe_payment_method_id == payment_method_id
+        )
+
+        if existing_payment_method:
+            return  # Already saved
+
+        # Save to our database
+        payment_method_doc = StripePaymentMethodDoc(
+            user_id=user_id,
+            stripe_customer_id=customer_id,
+            stripe_payment_method_id=payment_method_id,
+            card_last4=card_details.get('last4'),
+            card_brand=card_details.get('brand'),
+            card_exp_month=card_details.get('exp_month'),
+            card_exp_year=card_details.get('exp_year'),
+            created_time=datetime.now(timezone.utc),
+            updated_time=datetime.now(timezone.utc),
+        )
+        await payment_method_doc.save()
+
+    async def __handle_attachment_error(
+        self, attach_error: stripe.error.InvalidRequestError,
+        payment_method_id: str, card_details: dict, customer_id: str, user_id: str
+    ) -> None:
+        """
+        Handle specific Stripe attachment errors and still save to database when possible.
+        """
+        error_message = str(attach_error).lower()
+
+        if "already attached" in error_message or "may not be used again" in error_message:
+            # Payment method can't be attached but we can still save to database
+            await self.__save_payment_method_to_db(
+                payment_method_id, card_details, customer_id, user_id
+            )
+        else:
+            # Log other attachment errors
+            await self.module_logger.log_error(
+                error=f"Error attaching payment method: {attach_error}",
+                properties={"payment_method_id": payment_method_id, "user_id": user_id}
+            )
diff --git a/apps/payment/backend/infra/payment/constants.py b/apps/payment/backend/infra/payment/constants.py
index 25d4254..310f8ff 100644
--- a/apps/payment/backend/infra/payment/constants.py
+++ b/apps/payment/backend/infra/payment/constants.py
@@ -12,7 +12,6 @@ class MoneyCollectionType(IntEnum):
     UNSPECIFIED = 0
     MARKED_AS_PAID = 1
     UPLOAD_PROOF = 2
-    WECHAT_QR_CODE = 3
     STRIPE_CHECKOUT = 4
 
 
diff --git a/apps/payment/backend/infra/payment/models.py b/apps/payment/backend/infra/payment/models.py
index 8d556dc..e6a2df4 100644
--- a/apps/payment/backend/infra/payment/models.py
+++ b/apps/payment/backend/infra/payment/models.py
@@ -24,3 +24,18 @@ class StripeTransactionDoc(Document):
 
     class Settings:
         name = "stripe_transaction"
+
+
+class StripePaymentMethodDoc(Document):
+    user_id: str
+    stripe_customer_id: str
+    stripe_payment_method_id: str
+    card_last4: Optional[str] = None
+    card_brand: Optional[str] = None
+    card_exp_month: Optional[int] = None
+    card_exp_year: Optional[int] = None
+    created_time: datetime
+    updated_time: datetime
+
+    class Settings:
+        name = "stripe_payment_method"
diff --git a/apps/payment/backend/models/__init__.py b/apps/payment/backend/models/__init__.py
index 077c1f5..b5a31b5 100644
--- a/apps/payment/backend/models/__init__.py
+++ b/apps/payment/backend/models/__init__.py
@@ -5,9 +5,9 @@
 # TODO: Add all models to backend_models
 from backend.services.payment.models import IncomeProfileDoc, PaymentProfileDoc
 from backend.services.project.models import ProjectDoc
-from backend.infra.payment.models import StripeTransactionDoc
+from backend.infra.payment.models import StripeTransactionDoc, StripePaymentMethodDoc
 
-backend_models = [IncomeProfileDoc, PaymentProfileDoc, ProjectDoc, StripeTransactionDoc]
+backend_models = [IncomeProfileDoc, PaymentProfileDoc, ProjectDoc, StripeTransactionDoc, StripePaymentMethodDoc]
 # backend_models.extend(code_models)
 # backend_models.extend(user_models)
 # backend_models.extend(profile_models)
diff --git a/apps/payment/backend/models/payment/models.py b/apps/payment/backend/models/payment/models.py
index 387c59e..5ad97e0 100644
--- a/apps/payment/backend/models/payment/models.py
+++ b/apps/payment/backend/models/payment/models.py
@@ -2,6 +2,7 @@ from typing import List, Dict, Optional
 from decimal import Decimal
 from beanie import Document
 from pydantic import BaseModel
+from datetime import datetime
 
 from backend.services.payment.constants import PaymentGateway
 from backend.infra.payment.constants import MoneyCollectionType, PaymentLocation
@@ -23,7 +24,6 @@ class MoneyCollectingMethod(BaseModel):
     location: Optional[PaymentLocation]
     priority: int = 0  # less number has high priority to be used.
     stripe_account_id: Optional[str]
-    wechat_qr_code: Optional[str]
     last_update_time: Optional[int] = None
 
 
@@ -61,3 +61,6 @@ class PaymentProfileDoc(Document):
 
     class Settings:
         name = "payment_profile"
+
+
+
diff --git a/apps/payment/backend/services/payment/constants.py b/apps/payment/backend/services/payment/constants.py
index 202cba6..1b5d568 100644
--- a/apps/payment/backend/services/payment/constants.py
+++ b/apps/payment/backend/services/payment/constants.py
@@ -3,4 +3,3 @@ from enum import IntEnum
 
 class PaymentGateway(IntEnum):
     STRIP = 1
-    WECHAT = 2
diff --git a/apps/payment/backend/services/payment/models.py b/apps/payment/backend/services/payment/models.py
index 606668e..05d79bf 100644
--- a/apps/payment/backend/services/payment/models.py
+++ b/apps/payment/backend/services/payment/models.py
@@ -27,7 +27,6 @@ class MoneyCollectingMethod(BaseModel):
     location: Optional[PaymentLocation]
     priority: int = 0  # less number has high priority to be used.
     stripe_account_id: Optional[str]
-    wechat_qr_code: Optional[str]
     last_update_time: Optional[int] = None
 
 
diff --git a/apps/payment/common/log/base_logger.py b/apps/payment/common/log/base_logger.py
index 24f7bb0..2470ebe 100644
--- a/apps/payment/common/log/base_logger.py
+++ b/apps/payment/common/log/base_logger.py
@@ -30,7 +30,7 @@ class LoggerBase:
         guru_logger.remove()
 
         file_sink = JsonSink(
-            log_file_path=log_filename, 
+            log_file_path=log_filename,
             rotation_size_bytes=rotation_bytes,
             max_backup_files=log_settings.MAX_BACKUP_FILES
             )
diff --git a/apps/payment/webapi/routes/payment/payment_manager_controller.py b/apps/payment/webapi/routes/payment/payment_manager_controller.py
index e9500ce..eb21bd1 100644
--- a/apps/payment/webapi/routes/payment/payment_manager_controller.py
+++ b/apps/payment/webapi/routes/payment/payment_manager_controller.py
@@ -6,19 +6,6 @@ from fastapi.encoders import jsonable_encoder
 router = APIRouter()
 payment_hub = PaymentHub()
 
-# Web API
-# Fetch wechat qr code
-@router.get(
-    "/fetch_wechat_qr_code/{project_id}",
-    operation_id="fetch_wechat_qr_code",
-    summary="Fetch wechat qr code",
-    description="Fetch wechat qr code",
-)
-async def fetch_wechat_qr_code(
-    project_id: str
-):
-    return await payment_hub.fetch_wechat_qr_code(project_id)
-
 # Web API
 # Fetch stripe account id
 @router.get(
diff --git a/apps/payment/webapi/routes/payment/stripe_manager_controller.py b/apps/payment/webapi/routes/payment/stripe_manager_controller.py
index ee95dea..c8c353a 100644
--- a/apps/payment/webapi/routes/payment/stripe_manager_controller.py
+++ b/apps/payment/webapi/routes/payment/stripe_manager_controller.py
@@ -204,8 +204,28 @@ async def handle_account_webhook(
                 details_submitted=session["details_submitted"],
                 payouts_enabled=session["payouts_enabled"],
                 charges_enabled=session["charges_enabled"]
-            )  
+            )
     except Exception as e:
         raise HTTPException(status_code=400, detail=str(e))
-    
+
     return JSONResponse(content={"status": "success"})
+
+
+# Web API
+# Detach payment method
+@router.delete(
+    "/detach_payment_method/{payment_method_id}",
+    operation_id="detach_payment_method",
+    summary="Detach payment method from customer",
+    description="Detach a payment method from a Stripe customer",
+)
+async def detach_payment_method(payment_method_id: str):
+    try:
+        # Detach the payment method from Stripe
+        stripe.PaymentMethod.detach(payment_method_id)
+        return JSONResponse(content={"success": True, "message": "Payment method detached successfully"})
+    except Exception as e:
+        return JSONResponse(
+            status_code=400,
+            content={"success": False, "message": f"Failed to detach payment method: {str(e)}"}
+        )