fix: update database_url configuration for async engine to use host and port

backend/session.py

@@ -10,21 +10,22 @@ from .config import (
     PG_PASSWORD,
 )
 
-database_url = (
-    f"postgresql+asyncpg://"
-    f"{PG_LOGIN}:{PG_PASSWORD}@"
-    f"/{PG_DATABASE}?host=/run/postgresql/"
-)
-
 # database_url = (
 #     f"postgresql+asyncpg://"
 #     f"{PG_LOGIN}:{PG_PASSWORD}@"
-#     f"{PG_HOST}:{PG_PORT}/{PG_DATABASE}"
+#     f"/{PG_DATABASE}?host=/run/postgresql/"
 # )
 
+database_url = (
+    f"postgresql+asyncpg://"
+    f"{PG_LOGIN}:{PG_PASSWORD}@"
+    f"{PG_HOST}:{PG_PORT}/{PG_DATABASE}"
+)
+
 engine = create_async_engine(
     database_url,
     pool_timeout=2000,
+    pool_size=10,
     pool_pre_ping=True,
 )
 session_factory = async_sessionmaker(