[ADD] - Added social media user profile get and upsert microservice with nosql database integration

app/main.py

@@ -0,0 +1,39 @@
+from fastapi import FastAPI, HTTPException
+from database import get_user_profile, update_user_profile
+from cache.cache import BaselineCache
+from cache.prefetch_cache import PrefetchCache
+from cache.tiered_cache import TieredCache
+from config import CACHE_STRATEGY, CACHE_LIMIT, L2_CACHE_LIMIT
+
+app = FastAPI()
+
+# Initialize cache based on strategy from config.yaml or environment variable
+if CACHE_STRATEGY == "Baseline":
+    cache = BaselineCache(limit=CACHE_LIMIT)
+elif CACHE_STRATEGY == "Prefetch":
+    cache = PrefetchCache()
+elif CACHE_STRATEGY == "Tiered":
+    cache = TieredCache(limit=CACHE_LIMIT, l2_limit=L2_CACHE_LIMIT)
+else:
+    raise ValueError(f"Invalid CACHE_STRATEGY: {CACHE_STRATEGY}")
+
+@app.get("/user/{user_id}")
+def fetch_user_profile(user_id: str):
+    """Fetch user profile with caching"""
+    cached_profile = cache.get(user_id)
+    if cached_profile:
+        return {"user_id": user_id, "profile": cached_profile, "source": "cache"}
+
+    profile = get_user_profile(user_id)
+    if profile is None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    cache.put(user_id, profile)  # Store in cache
+    return {"user_id": user_id, "profile": profile, "source": "database"}
+
+@app.post("/update_user/")
+def modify_user_profile(user_id: str, name: str, followers: int, bio: str, posts: str):
+    """Update user profile and refresh cache"""
+    update_user_profile(user_id, name, followers, bio, posts)
+    cache.invalidate(user_id)  # Invalidate old cache
+    return {"message": "User profile updated successfully"}