Update app.py

app.py

@@ -1,3 +1,4 @@
+from contextlib import asynccontextmanager
 from fastapi import FastAPI, Request
 from routers import news
 from routers import curiosity
@@ -14,19 +15,18 @@ from routers import twitter
 from routers import searchterm
 from routers import inference_createposter
 from routers import db
+from routers.db import connect_db, disconnect_db
 
-# Instancia a aplicação FastAPI
-app = FastAPI()
-
-# Conecta ao banco de dados na inicialização do servidor
-@app.on_event("startup")
-async def startup():
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    # Startup
     await connect_db()
-
-# Desconecta do banco de dados ao encerrar o servidor
-@app.on_event("shutdown")
-async def shutdown():
+    yield
+    # Shutdown
     await disconnect_db()
+
+# Instancia a aplicação FastAPI
+app = FastAPI(lifespan=lifespan)
     
 @app.get("/")
 def greet_json():