完成timescaledb获取在线模拟数据的方法

postgresql/database.py

@@ -21,14 +21,12 @@ class Database:
         try:
             self.pool = psycopg_pool.AsyncConnectionPool(
                 conninfo=conn_string,
-                min_size=1,
+                min_size=5,
                 max_size=20,
                 open=False,  # Don't open immediately, wait for startup
                 kwargs={"row_factory": dict_row},  # Return rows as dictionaries
             )
-            logger.info(
-                f"PostgreSQL connection pool initialized for database: 'default'"
-            )
+            logger.info(f"PostgreSQL connection pool initialized for database: default")
         except Exception as e:
             logger.error(f"Failed to initialize postgresql connection pool: {e}")
             raise