Redis replication order

Question

In a master-slave scenario, Redis replication is made in an asynchronous way. But is it guaranteed that the commands are replicated in order? If I have these commands:

SET key1 111
SET key2 222
SET key3 333

If the slave node has "key2", then I can say for sure that it'll also have "key1"?

Answer 1

Yes, commands are replicated in order. Anything else wouldn't actually be replication.

As described in the documentation , both the master and the replica keep track of an offset indicating where they are in the stream of commands. That allows the replica to know if it receives a command out of order and not process it prematurely.