mysql主从同步改为双向同步的问题

Question

公司项目原先配置了两台主机进行Mysql主从同步，server_a里的appdb库实时同步到server_b。：

server_a

server-id       = 1
binlog-do-db = appdb

server_b

server-id       = 2
replicate-do-db = appdb

现在出现了一个新的需求，serber_b上的appdb库里有个单独的表 appdb.userlog（只在server_b上产生数据），需要同步回server_a。
那么如果现在把server_a的master设置成server_b同步回去的话可行吗？
会不会变成一个死循环( b->a->b )？

Answer 1

Have you not considered things like redis?
Obviously a is the host, and b is the backup. The data generated on it should be something excavated when it is idle, right? I personally think it is better to store this kind of data separately, such as server-C or redis cache.

Answer 2

mysql dual master synchronization