release: bump version to 0.38.0

backend/app/db/session.py

@@ -1,3 +1,4 @@
+import logging
 from typing import AsyncGenerator
 
 from sqlalchemy import text
@@ -6,9 +7,20 @@ from sqlalchemy.orm import declarative_base
 
 from app.core.config import settings
 
+logger = logging.getLogger(__name__)
+
+DB_POOL_CONFIG = {
+    "pool_pre_ping": True,
+    "pool_recycle": 1800,
+    "pool_size": 10,
+    "max_overflow": 20,
+    "pool_timeout": 30,
+}
+
 engine = create_async_engine(
     settings.DATABASE_URL,
     echo=settings.DEBUG if hasattr(settings, "DEBUG") else False,
+    **DB_POOL_CONFIG,
 )
 
 async_session_factory = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
@@ -97,6 +109,16 @@ async def init_db():
     import app.models.system_setting  # noqa: F401
     import app.models.playground_session  # noqa: F401
     import app.models.playground_message  # noqa: F401
+    import app.models.system_log  # noqa: F401
+
+    logger.warning(
+        "Database pool settings active: pre_ping=%s recycle=%ss size=%s overflow=%s timeout=%ss",
+        DB_POOL_CONFIG["pool_pre_ping"],
+        DB_POOL_CONFIG["pool_recycle"],
+        DB_POOL_CONFIG["pool_size"],
+        DB_POOL_CONFIG["max_overflow"],
+        DB_POOL_CONFIG["pool_timeout"],
+    )
 
     async with engine.begin() as conn:
         await conn.run_sync(Base.metadata.create_all)