v2026.06

app/api.py

@@ -1,3 +1,4 @@
+from contextlib import asynccontextmanager
 from datetime import datetime
 from typing import List, Optional
 
@@ -49,24 +50,37 @@ def create_app():
     if FastAPI is None:
         return None
 
-    api = FastAPI(title="Syncio Migration API", version="0.1.0")
+    _shared: dict = {}
 
-    @api.on_event("startup")
-    def startup_queue():
+    @asynccontextmanager
+    async def lifespan(app: FastAPI):
+        from sqlalchemy import create_engine
+
+        config = Config()
+        _shared['engine'] = create_engine(
+            config.POSTGRES_CONNECTION_STRING,
+            pool_pre_ping=True,
+            pool_recycle=1800,
+        )
+        _shared['config'] = config
         if Config.START_API_WORKER:
             migration_queue.start()
 
+        yield
+
+        engine = _shared.get('engine')
+        if engine is not None:
+            engine.dispose()
+
+    api = FastAPI(title="Syncio Migration API", version="0.1.0", lifespan=lifespan)
+
     @api.get("/health")
     def health():
         return {"status": "ok"}
 
     @api.get("/tables")
     def tables():
-        from sqlalchemy import create_engine
-
-        config = Config()
-        engine = create_engine(config.POSTGRES_CONNECTION_STRING)
-        repository = TableConfigRepository(config, engine)
+        repository = TableConfigRepository(_shared['config'], _shared['engine'])
         table_configs = repository.load_configs(seed_defaults=True)
         return [
             {