MySQL: MaxIdleConns, MaxOpenConns -> 8

engine/wrapper/wrapper.go

@@ -141,8 +141,8 @@ func (this *Wrapper) UseDatabase() error {
 
 	// Max 60 minutes and max 4 connection per host
 	this.DB.SetConnMaxLifetime(time.Minute * 60)
-	this.DB.SetMaxIdleConns(4)
-	this.DB.SetMaxOpenConns(4)
+	this.DB.SetMaxIdleConns(8)
+	this.DB.SetMaxOpenConns(8)
 
 	return nil
 }