高并发情况下 多个请求同时更新同一个key的redis缓存 如何加锁？ 这个是需要程序上实现 还是redis本身带有？
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Redis It is a single-threaded model, so there is no locking problem.
Redis
You can take a look at the documentation of watch+multi/exec, which may meet your needs.
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RedisIt is a single-threaded model, so there is no locking problem.You can take a look at the documentation of watch+multi/exec, which may meet your needs.