2020年我們要全面推進MGR在業務系統的使用，目前存在一個很重要的問題，就是在MGR的主節點出現異常的情況下，怎麼解決客戶端重定向的問題
解決的方案：
1、使用官方的connector
2、使用負載均衡設備，比如F5
3、使用router,比如MySQL的Router 8.0
4、中間件，比如某些廠商的產品，或者proxySQL。以上方案我們都在測試當中~
It is important to understand that although the database service is available, in the event of a server crash, those clients connected to it must be redirected, or failed over, to a different server. This is not something Group Replication attempts to resolve. A connector, load balancer, router, or some form of middleware are more suitable to deal with this issue. For example see MySQL Router 8.0.