fix: retry when db is busy. (#85)

Author: stone-jin

lib/loader.js

@@ -133,13 +133,12 @@ module.exports = app => {
     try {
       await database.authenticate();
     } catch (e) {
-      if (e.name !== 'SequelizeConnectionRefusedError') throw e;
       if (app.model[AUTH_RETRIES] >= 3) throw e;
 
-      // sleep 2s to retry, max 3 times
+      // sleep 1s to retry, max 3 times
       database[AUTH_RETRIES] += 1;
-      app.logger.warn(`Sequelize Error: ${e.message}, sleep 2 seconds to retry...`);
-      await sleep(2000);
+      app.logger.warn(`Sequelize Error: ${e.message}, sleep 1 seconds to retry...`);
+      await sleep(1000);
       await authenticate(database);
     }
   }