Improved database connection and logging

src/main.py

@@ -4,7 +4,7 @@ from github_api import find_package_version_with_tag as find_package_version_wit
 from dockerhub_api import find_package_version_with_tag as find_package_version_with_tag_dockerhub
 import uvicorn
 from contextlib import asynccontextmanager
-from db import get_db, create_connection_pool, close_connection_pool
+from db import get_db, create_connection_pool, close_connection_pool, start_healthcheck_thread
 import logging
 from send_notification import send_notification
 from metrics_server import REQUEST_COUNTER
@@ -19,6 +19,9 @@ async def lifespan(app: FastAPI):
 	logger.info("Creating MySQL connection pool...")
 	create_connection_pool()
 
+	start_healthcheck_thread()
+	logger.info("MySQL healthcheck thread started.")
+
 	yield
 	logger.info("Closing MySQL connection pool...")
 	close_connection_pool()