Does Redis lock during write?

redis

Solution

Redis is single-threaded. All commands are atomic. While command is running, no other command can be executed. But since everything is in memory, commands are (normally) pretty fast.

So no, redis does not allow reading during writing, but that's not a problem.

Problem

I tried to find out but I don't sure that is Redis MVCC? Does Redis allow reading during writing?

Original source