Step 3: MongoDB and Redis integration complete

- Added MongoDB and Redis containers to docker-compose
- Integrated Users service with MongoDB using Beanie ODM
- Replaced in-memory storage with persistent MongoDB
- Added proper data models with email validation
- Verified data persistence with MongoDB ObjectIDs

Services running:
- MongoDB: Port 27017 (with health checks)
- Redis: Port 6379 (with health checks)
- Users service: Connected to MongoDB
- Console: API Gateway routing working

Test: Users now stored in MongoDB with persistence

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

services/users/backend/models.py

@@ -0,0 +1,24 @@
+from beanie import Document
+from pydantic import EmailStr, Field
+from datetime import datetime
+from typing import Optional
+
+
+class User(Document):
+    username: str = Field(..., unique=True)
+    email: EmailStr
+    full_name: Optional[str] = None
+    created_at: datetime = Field(default_factory=datetime.now)
+    updated_at: datetime = Field(default_factory=datetime.now)
+    
+    class Settings:
+        collection = "users"
+    
+    class Config:
+        json_schema_extra = {
+            "example": {
+                "username": "john_doe",
+                "email": "john@example.com",
+                "full_name": "John Doe"
+            }
+        }