diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d30248..8f7e940 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,27 @@
+# [1.6.0](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/compare/v1.5.0...v1.6.0) (2025-09-18)
+
+
+### Bug Fixes
+
+* **exclude:** ban the exclusive mode ([9939a3f](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/9939a3f430c2a8e1386628da9c33344295e9951a))
+* **path:** fix the skip path ([9473c19](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/9473c19141d2203c3c96d9ee0227423844591f00))
+
+
+### Features
+
+* **config:** add auth endpoint to dockerfile ([3a6e0e1](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/3a6e0e1ca1badd61237157b19cebc0ae63b27539))
+* **config:** add the AUTH_SERVICE_ENDPOINT ([bf1e476](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/bf1e476c0b9e37d1312ca06874c34ae9af4ceb82))
+* **config:** add the AUTH_SERVICE_ENDPOINT to the .env file ([cea505c](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/cea505cbdd0d6e7ccb3b40613a7abc6aa15ad00b))
+* **doc:** add new doc and register into mongodb ([1c70143](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/1c70143f2dc653c8c61c28a4cd42c471791836a6))
+* **integrate api:** integrate external auth introspect api ([282d1bc](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/282d1bcd93a53075febada86b502322e41251bf8))
+* **log:** log the failure na d sucess of interface ([f270804](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/f27080452ceddc8451f5c70c8e47f2d9d53db2e8))
+* **log:** use str to ensure that class can be identified ([c5cfb5a](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/c5cfb5a424c39e91f1d97ed3f31405452c427dc4))
+* **middleware:** add the middleware for auth service ([6256b33](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/6256b3377d5c87666bddd2c0d4580c1a3871cc9e))
+* **name:** rename ([6ecee28](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/6ecee2837edbef4efe35e48271926938fc839671))
+* **register:** register the middleware ([da75ba7](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/da75ba746c06b7a20255fa41aa403f76368905e9))
+* **rename:** rename the api_key ([6630d20](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/6630d20c13852f438d53f6013a7ab941ae5709a7))
+* **template:** add the new job notification template ([05aca96](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/commit/05aca9663977237c2fff03e8b3ed74e51f73bd7f))
+
 # [1.5.0](https://gitea.freeleaps.mathmast.com/freeleaps/freeleaps-service-hub/compare/v1.4.0...v1.5.0) (2025-09-05)
 
 
diff --git a/VERSION b/VERSION
index bc80560..dc1e644 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.0
+1.6.0
diff --git a/apps/notification/common/config/app_settings.py b/apps/notification/common/config/app_settings.py
index 5346dfe..2b95132 100644
--- a/apps/notification/common/config/app_settings.py
+++ b/apps/notification/common/config/app_settings.py
@@ -16,6 +16,10 @@ class AppSettings(BaseSettings):
     RABBITMQ_PASSWORD: str = ""
     RABBITMQ_VIRTUAL_HOST: str = ""
 
+    MONGODB_URI: str = ""
+    MONGODB_NAME: str = ""
+    TENANT_CACHE_MAX: int = 64
+
     SYSTEM_USER_ID: str = ""
     SMS_FROM: str = ""
     EMAIL_FROM: str = ""
diff --git a/apps/notification/tests/integration_tests/local.env b/apps/notification/tests/integration_tests/local.env
index f5b5a2b..b9a1142 100644
--- a/apps/notification/tests/integration_tests/local.env
+++ b/apps/notification/tests/integration_tests/local.env
@@ -28,12 +28,12 @@ export RABBITMQ_HOST=localhost
 export RABBITMQ_PORT=5672
 
 export AUTH_SERVICE_ENDPOINT=http://localhost:9000/api/v1/keys/
-export AUTH_SERVICE_PORT=9000
+export TENANT_CACHE_MAX=64
 
 # for local environment
 export MONGODB_URI=mongodb://localhost:27017/
 # connectivity from local to alpha
 #export MONGODB_URI=mongodb+srv://jetli:8IHKx6dZK8BfugGp@freeleaps2.hanbj.mongodb.net/
-export MONGODB_NAME=interview
+export MONGODB_NAME=freeleaps2
 export FREELEAPS_ENV=local
 export LOG_BASE_PATH=./log
\ No newline at end of file
diff --git a/apps/notification/webapi/middleware/README.md b/apps/notification/webapi/middleware/README.md
new file mode 100644
index 0000000..a01f1ce
--- /dev/null
+++ b/apps/notification/webapi/middleware/README.md
@@ -0,0 +1,130 @@
+# Notification Service Middleware Guide
+
+This guide explains how to use and test the middleware system of the notification service.
+
+## Middleware Architecture
+
+### Middleware Execution Order
+```
+Client Request → FreeleapsAuthMiddleware → TenantDBConnectionMiddleware → Business Logic
+```
+
+1. **FreeleapsAuthMiddleware**: API Key validation and path skipping
+2. **TenantDBConnectionMiddleware**: Tenant database switching (based on product_id)
+
+## 1. Setup API Key
+
+### 1.1 Register API Key via freeleaps-auth service
+
+Ensure the freeleaps-auth service is running on port 9000, then execute the following commands:
+
+```bash
+# Register API KEY for magicleaps tenant
+curl -X POST "http://localhost:9000/api/v1/keys/register_api_key" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "tenant_name": "magicleaps",
+    "product_id": "68a3f19119cfaf36316f6d14",
+    "scopes": ["notify.send_notification"],
+    "expires_at": "2099-12-31T23:59:59Z"
+  }'
+
+# Register API KEY for test-a tenant  
+curl -X POST "http://localhost:9000/api/v1/keys/register_api_key" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "tenant_name": "test-a",
+    "product_id": "68a3f19119cfaf36316f6d15",
+    "scopes": ["notify.send_notification"],
+    "expires_at": "2099-12-31T23:59:59Z"
+  }'
+
+# Register API KEY for test-b tenant
+curl -X POST "http://localhost:9000/api/v1/keys/register_api_key" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "tenant_name": "test-b",
+    "product_id": "68a3f19119cfaf36316f6d16",
+    "scopes": ["notify.send_notification"],
+    "expires_at": "2099-12-31T23:59:59Z"
+  }'
+```
+
+### 1.2 Record the returned API KEY
+
+Example successful response:
+```json
+{
+  "success": true,
+  "data": {
+    "tenant_name": "magicleaps",
+    "product_id": "68a3f19119cfaf36316f6d14",
+    "api_key": {
+      "key_id": "ak_live_UkIcMxwBXIw",
+      "api_key": "ak_live_UkIcMxwBXIw.J7qWirjL0IJkmvqktjEh3ViveP8dgiturxyy0KJ5sKk",
+      "status": "active"
+    }
+  }
+}
+```
+
+## 2. Configure Tenant Database
+
+Create tenant documents in the `tenant_doc` collection of the main database:
+
+```json
+[
+  {
+    "tenant_name": "magicleaps",
+    "product_id": "68a3f19119cfaf36316f6d14",
+    "mongodb_uri": "mongodb://localhost:27017/interview",
+    "status": "active"
+  },
+  {
+    "tenant_name": "test-a", 
+    "product_id": "68a3f19119cfaf36316f6d15",
+    "mongodb_uri": "mongodb://localhost:27017/test-a",
+    "status": "active"
+  },
+  {
+    "tenant_name": "test-b",
+    "product_id": "68a3f19119cfaf36316f6d16",
+    "mongodb_uri": "mongodb://localhost:27017/test-b",
+    "status": "active"
+  }
+]
+```
+
+## 3. Test Middleware Functionality
+
+### 3.1 Test System Endpoints (Skip Validation)
+
+```bash
+# Health check endpoints - should return 200, skip all validation
+curl -v "http://localhost:8104/api/_/healthz"
+curl -v "http://localhost:8104/api/_/readyz"
+curl -v "http://localhost:8104/api/_/livez"
+
+# Documentation and monitoring endpoints - should return 200, skip all validation
+curl -v "http://localhost:8104/docs"
+curl -v "http://localhost:8104/metrics"
+```
+
+### 3.2 Test API Key Validation
+
+```bash
+# No API Key - should return 200 (compatibility mode)
+curl -v "http://localhost:8104/api/notification/global_templates/list?region=1"
+
+# Invalid API Key - should return 400/401
+curl -v "http://localhost:8104/api/notification/global_templates/list?region=1" \
+  -H "X-API-KEY: invalid_key"
+
+# Valid API Key - should return 200 and switch to tenant database
+curl -v "http://localhost:8104/api/notification/global_templates/list?region=1" \
+  -H "X-API-KEY: ak_live_UkIcMxwBXIw.J7qWirjL0IJkmvqktjEh3ViveP8dgiturxyy0KJ5sKk"
+```
+
+### 3.3 Check Log Output
+
+View logs in `/apps/notification/log/notification-activity.log`:
diff --git a/apps/notification/webapi/middleware/__init__.py b/apps/notification/webapi/middleware/__init__.py
index 5700ce5..e607c44 100644
--- a/apps/notification/webapi/middleware/__init__.py
+++ b/apps/notification/webapi/middleware/__init__.py
@@ -1,3 +1,4 @@
 from .freeleaps_auth_middleware import FreeleapsAuthMiddleware
+from .tenant_DBConnection_middleware import TenantDBConnectionMiddleware
 
-__all__ = ['FreeleapsAuthMiddleware']
\ No newline at end of file
+__all__ = ['FreeleapsAuthMiddleware', 'TenantDBConnectionMiddleware']
\ No newline at end of file
diff --git a/apps/notification/webapi/middleware/tenant_DBConnection_middleware.py b/apps/notification/webapi/middleware/tenant_DBConnection_middleware.py
new file mode 100644
index 0000000..d568cd9
--- /dev/null
+++ b/apps/notification/webapi/middleware/tenant_DBConnection_middleware.py
@@ -0,0 +1,78 @@
+from fastapi import Request, status
+from fastapi.responses import JSONResponse
+from webapi.middleware.freeleaps_auth_middleware import request_context_var
+from common.log.module_logger import ModuleLogger
+
+
+class TenantDBConnectionMiddleware:
+    def __init__(self, app):
+        self.app = app
+        self.module_logger = ModuleLogger(sender_id=TenantDBConnectionMiddleware)
+
+    async def __call__(self, scope, receive, send):
+        if scope["type"] != "http":
+            return await self.app(scope, receive, send)
+
+        request = Request(scope, receive)
+
+        # Get tenant id from auth context (set by FreeleapsAuthMiddleware)
+        product_id = None
+        try:
+            ctx = request_context_var.get()
+            product_id = getattr(ctx, "product_id", None)
+            await self.module_logger.log_info(f"Retrieved product_id from auth context: {product_id}")
+        except Exception as e:
+            await self.module_logger.log_error(f"Failed to get auth context: {str(e)}")
+            product_id = None
+
+        # Get tenant cache and main database from app state
+        try:
+            tenant_cache = request.app.state.tenant_cache
+            main_db = request.app.state.main_db
+            await self.module_logger.log_info(f"Retrieved app state - tenant_cache: {'success' if tenant_cache is not None else 'fail'}, main_db: {'success' if main_db is not None else 'fail'}")
+        except Exception as e:
+            await self.module_logger.log_error(f"Failed to get app state: {str(e)}")
+            response = JSONResponse(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                content={"detail": "Database not properly initialized"}
+            )
+            return await response(scope, receive, send)
+
+        if not product_id:
+            # Compatibility / public routes: use main database with tenant models initialized
+            await self.module_logger.log_info(f"No product_id - using main database for path: {request.url.path}")
+            
+            # Get main database with Beanie initialized for tenant models
+            main_db_initialized = await tenant_cache.get_main_db_initialized()
+            
+            request.state.db = main_db_initialized
+            request.state.product_id = None
+            await self.module_logger.log_info(f"Successfully initialized main database with tenant models")
+            return await self.app(scope, receive, send)
+
+        try:
+            # Get tenant-specific database with Beanie already initialized (cached)
+            await self.module_logger.log_info(f"Attempting to get tenant database for product_id: {product_id}")
+            tenant_db = await tenant_cache.get_initialized_db(product_id)
+            
+            request.state.db = tenant_db
+            request.state.product_id = product_id
+            await self.module_logger.log_info(f"Successfully retrieved cached tenant database with Beanie for product_id: {product_id}")
+            return await self.app(scope, receive, send)
+            
+        except ValueError as e:
+            # Handle tenant not found or inactive (ValueError from TenantDBCache)
+            await self.module_logger.log_error(f"Tenant error for {product_id}: {str(e)}")
+            response = JSONResponse(
+                status_code=status.HTTP_404_NOT_FOUND, 
+                content={"detail": str(e)}
+            )
+            return await response(scope, receive, send)
+            
+        except Exception as e:
+            await self.module_logger.log_error(f"Database error for tenant {product_id}: {str(e)}")
+            response = JSONResponse(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, 
+                content={"detail": "Database connection error"}
+            )
+            return await response(scope, receive, send)
\ No newline at end of file
diff --git a/apps/notification/webapi/providers/database.py b/apps/notification/webapi/providers/database.py
index 8a6e350..7f6fc01 100644
--- a/apps/notification/webapi/providers/database.py
+++ b/apps/notification/webapi/providers/database.py
@@ -1,23 +1,21 @@
 from webapi.config.site_settings import site_settings
 from beanie import init_beanie
-from motor.motor_asyncio import AsyncIOMotorClient
+from fastapi import HTTPException
+from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorDatabase
 from backend.models.models import MessageTemplateDoc, EmailSenderDoc, EmailSendStatusDoc, EmailTrackingDoc, EmailBounceDoc, UsageLogDoc
+from common.config.app_settings import app_settings
+from common.log.module_logger import ModuleLogger
+import asyncio
+from collections import OrderedDict
+from typing import Optional, Union
 import os
 
-# MongoDB config
-MONGODB_URI = os.getenv('MONGODB_URI')
-MONGODB_NAME = os.getenv('MONGODB_NAME')
 
-# create MongoDB client
-client = AsyncIOMotorClient(
-    MONGODB_URI,
-    serverSelectionTimeoutMS=60000,
-    minPoolSize=5,
-    maxPoolSize=20,
-    heartbeatFrequencyMS=20000,
-)
+# Global variables for database management
+MAIN_CLIENT: Optional[AsyncIOMotorClient] = None
+TENANT_CACHE: Optional['TenantDBCache'] = None
 
-# define all document models
+# Define document models 
 document_models = [
     MessageTemplateDoc,
     EmailSenderDoc,
@@ -26,19 +24,200 @@ document_models = [
     EmailBounceDoc,
     UsageLogDoc
 ]
+tenant_document_models = [
+    MessageTemplateDoc,
+    EmailSenderDoc,
+    EmailSendStatusDoc
+]
+
+class TenantDBCache:
+    """
+    Enhanced tenant database cache that includes Beanie initialization.
+    product_id -> (AsyncIOMotorClient, AsyncIOMotorDatabase, beanie_initialized: bool)
+    Uses main_db.tenant_doc to resolve mongodb_uri; caches clients/dbs with LRU and Beanie state.
+    """
+    
+    def __init__(self, main_db: AsyncIOMotorDatabase, max_size: int = 64):
+        self.main_db = main_db
+        self.max_size = max_size
+        self._cache: "OrderedDict[str, tuple[AsyncIOMotorClient, AsyncIOMotorDatabase, bool]]" = OrderedDict()
+        self._locks: dict[str, asyncio.Lock] = {}
+        self._global_lock = asyncio.Lock()
+        self.module_logger = ModuleLogger(sender_id="TenantDBCache")
+
+    async def get_initialized_db(self, product_id: str) -> AsyncIOMotorDatabase:
+        """Get tenant database with Beanie already initialized"""
+        
+        # fast-path
+        cached = self._cache.get(product_id)
+        if cached:
+            client, db, beanie_initialized = cached
+            await self.module_logger.log_info(f"Found cached database for {product_id}, beanie_initialized: {beanie_initialized}")
+            self._cache.move_to_end(product_id)
+            
+            if beanie_initialized:
+                return db
+            else:
+                # Initialize Beanie if not done yet
+                await init_beanie(database=db, document_models=tenant_document_models)
+                await self.module_logger.log_info(f"Beanie initialization completed for {product_id}")
+                
+                # Update cache with beanie_initialized = True
+                self._cache[product_id] = (client, db, True)
+                return db
+
+        # double-checked under per-tenant lock
+        lock = self._locks.setdefault(product_id, asyncio.Lock())
+        async with lock:
+            cached = self._cache.get(product_id)
+            if cached:
+                client, db, beanie_initialized = cached
+                await self.module_logger.log_info(f"Double-check found cached database for {product_id}, beanie_initialized: {beanie_initialized}")
+                self._cache.move_to_end(product_id)
+                
+                if beanie_initialized:
+                    return db
+                else:
+                    # Initialize Beanie if not done yet
+                    await init_beanie(database=db, document_models=tenant_document_models)
+                    await self.module_logger.log_info(f"Beanie initialization completed for {product_id} (double-check)")
+                    
+                    # Update cache with beanie_initialized = True
+                    self._cache[product_id] = (client, db, True)
+                    return db
+
+            # Create new tenant connection - use raw MongoDB query since we don't have TenantDoc model
+            """
+            tenant_doc content:
+                {
+                    "tenant_name": "magicleaps",
+                    "product_id": "68a3f19119cfaf36316f6d14",
+                    "mongodb_uri": "mongodb://localhost:27017/interview",
+                    "status": "active"
+                }
+            """
+            tenant = await self.main_db["tenant_doc"].find_one({"product_id": product_id})
+            if not tenant:
+                await self.module_logger.log_error(f"Tenant {product_id} does not exist in main database")
+                raise HTTPException(
+                    status_code=404,
+                    detail=f"Tenant {product_id} does not exist",
+                    headers={"X-Error-Message": f"Tenant {product_id} does not exist"}
+                )
+            if tenant.get("status") != "active":
+                await self.module_logger.log_error(f"Tenant {product_id} is not active, status: {tenant.get('status')}")
+                raise HTTPException(
+                    status_code=403,
+                    detail=f"Tenant {product_id} is not active",
+                    headers={"X-Error-Message": f"Tenant {product_id} is not active, status: {tenant.get('status')}"}
+                )
+
+            uri = tenant["mongodb_uri"]
+            client = AsyncIOMotorClient(uri, minPoolSize=3, maxPoolSize=20, serverSelectionTimeoutMS=10000)
+
+            # robust db name resolution (get_default_database handles mongodb+srv and empty paths)
+            default_db = client.get_default_database()
+            if default_db is not None:
+                db = default_db
+                await self.module_logger.log_info(f"Using default database for tenant {product_id}: {db.name}")
+            else:
+                await self.module_logger.log_error(f"No default database found for tenant {product_id}")
+                raise HTTPException(
+                    status_code=500,
+                    detail=f"No default database found for tenant {product_id}",
+                    headers={"X-Error-Message": f"No default database found for tenant {product_id}"}
+                )
+            # Initialize Beanie for this tenant database
+            await init_beanie(database=db, document_models=tenant_document_models)
+            await self.module_logger.log_info(f"Beanie initialization completed for new tenant database {product_id}")
+
+            # LRU put with beanie_initialized = True
+            await self._lru_put(product_id, (client, db, True))
+            await self.module_logger.log_info(f"Tenant database {product_id} cached successfully with Beanie initialized")
+            return db
+
+    async def get_main_db_initialized(self) -> AsyncIOMotorDatabase:
+        """Get main database with Beanie initialized for tenant models"""
+        # Re-initialize Beanie for main database with business models
+        await init_beanie(database=self.main_db, document_models=document_models)
+        await self.module_logger.log_info("Beanie initialization completed for main database")
+        return self.main_db
+
+    async def _lru_put(self, key: str, value: tuple[AsyncIOMotorClient, AsyncIOMotorDatabase, bool]):
+        async with self._global_lock:
+            self._cache[key] = value
+            self._cache.move_to_end(key)
+            if len(self._cache) > self.max_size:
+                old_key, (old_client, _, _) = self._cache.popitem(last=False)
+                await self.module_logger.log_info(f"Cache full, removing LRU tenant: {old_key}")
+                try:
+                    old_client.close()
+                    await self.module_logger.log_info(f"Closed connection for evicted tenant: {old_key}")
+                except Exception as e:
+                    await self.module_logger.log_error(f"Error closing connection for {old_key}: {str(e)}")
+                self._locks.pop(old_key, None)
+
+    async def aclose(self):
+        async with self._global_lock:
+            for key, (client, _, _) in self._cache.items():
+                try:
+                    client.close()
+                    await self.module_logger.log_info(f"Closed connection for tenant: {key}")
+                except Exception as e:
+                    await self.module_logger.log_error(f"Error closing connection for {key}: {str(e)}")
+            self._cache.clear()
+            self._locks.clear()
+            await self.module_logger.log_info("Tenant cache cleared successfully")
+
 
 def register(app):
+    """Register database-related configurations and setup"""
     app.debug = site_settings.DEBUG
     app.title = site_settings.NAME
 
     @app.on_event("startup")
     async def start_database():
-        await initiate_database()
+        await initiate_database(app)
+    
+    @app.on_event("shutdown")
+    async def shutdown_database():
+        await cleanup_database()
 
 
-async def initiate_database():
-    """initiate Beanie database connection"""
-    await init_beanie(
-        database=client[MONGODB_NAME],
-        document_models=document_models
-    )
\ No newline at end of file
+async def initiate_database(app):
+    """Initialize main database and tenant cache"""
+    global MAIN_CLIENT, TENANT_CACHE
+    
+    module_logger = ModuleLogger(sender_id="DatabaseInit")
+    
+    # 1) Create main/catalog client + DB
+    MAIN_CLIENT = AsyncIOMotorClient(app_settings.MONGODB_URI)
+    main_db = MAIN_CLIENT[app_settings.MONGODB_NAME]
+
+    # 2) Initialize Beanie for main DB with business document models
+    await init_beanie(database=main_db, document_models=document_models)
+
+    # 3) Create tenant cache that uses main_db lookups to resolve product_id -> tenant db
+    max_cache_size = getattr(app_settings, 'TENANT_CACHE_MAX', 64)
+    TENANT_CACHE = TenantDBCache(main_db, max_size=max_cache_size)
+
+    # 4) Store on app state for middleware to access
+    app.state.main_db = main_db
+    app.state.tenant_cache = TENANT_CACHE
+    
+    await module_logger.log_info("Database and tenant cache initialized successfully")
+
+
+async def cleanup_database():
+    """Cleanup database connections and cache"""
+    global MAIN_CLIENT, TENANT_CACHE
+    
+    module_logger = ModuleLogger(sender_id="DatabaseCleanup")
+    
+    if TENANT_CACHE:
+        await TENANT_CACHE.aclose()
+    
+    if MAIN_CLIENT:
+        MAIN_CLIENT.close()
+    
+    await module_logger.log_info("Database connections closed successfully")
\ No newline at end of file
diff --git a/apps/notification/webapi/providers/middleware.py b/apps/notification/webapi/providers/middleware.py
index 43df09b..ee47f3e 100644
--- a/apps/notification/webapi/providers/middleware.py
+++ b/apps/notification/webapi/providers/middleware.py
@@ -1,9 +1,11 @@
 from webapi.middleware.freeleaps_auth_middleware import FreeleapsAuthMiddleware
+from webapi.middleware.tenant_DBConnection_middleware import TenantDBConnectionMiddleware
 
 
 def register(app):
     """
     Register middleware to FastAPI application
     """
-    # Register API Key middleware
+    # Register middlewares
+    app.add_middleware(TenantDBConnectionMiddleware)
     app.add_middleware(FreeleapsAuthMiddleware)
\ No newline at end of file