想知道为何Redis用乐观锁，而MySQL数据库却没有用。乐观锁说白了并不是锁，而只是版本号检查而已，为何Redis不像MySQL那样用真正的锁机制呢？
怪我咯2017-04-17 12:02:22
Optimistic locking also has advantages, it can reduce overhead, but it will cause dirty data to enter the database. Redis should be for efficiency (of course I guessed it myself), as well as the simplicity of commands.
