diff --git a/src/core/db.js b/src/core/db.js
index e9f0679b..1b5d8c1f 100644
--- a/src/core/db.js
+++ b/src/core/db.js
@@ -13,6 +13,9 @@ const { MongoClient, ObjectId } = require('mongodb')
 var db
 
 async function connect() {
+    if (db) {
+        return db
+    }
     const mongoUri = getConfig().serverRuntimeConfig.dbUri
     const connection = await MongoClient.connect(mongoUri)
     db = init(connection)