feat: add retry to db connection when startup.

api/bin/dev.dart

@@ -8,12 +8,11 @@ import 'package:logging/logging.dart';
 
 void main() async {
   // Watch the config/ and web/ directories for changes, and hot-reload the server.
-  hierarchicalLoggingEnabled = true;
-
   var hot = HotReloader(() async {
-    var logger = Logger.detached('dde_gesture_manager_api')
+    Logger.root
       ..level = Level.ALL
       ..onRecord.listen(prettyLog);
+    var logger = Logger.detached('dde_gesture_manager_api');
     var app = Angel(logger: logger, reflector: MirrorsReflector());
     await app.configure(configureServer);
     return app;
@@ -23,6 +22,5 @@ void main() async {
   ]);
 
   var server = await hot.startServer('127.0.0.1', 3000);
-  print(
-      'dde_gesture_manager_api server listening at http://${server.address.address}:${server.port}');
+  print('dde_gesture_manager_api server listening at http://${server.address.address}:${server.port}');
 }