Redis 4.x Cookbook

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The differences between transactions in Redis and RDBMS merit attention.

The key difference is that there is no rollback feature in a Redis transaction. Generally speaking, two types of error may occur in a Redis transaction while different handling mechanisms are taken:

1. The first one is a syntax error for a command. In this case, because the error is detected while queuing the commands, the entire transaction will fast-fail and none of the commands in this transaction will be processed:

127.0.0.1:6379> MULTI OK 127.0.0.1:6379> SET FOO BAR QUEUED 127.0.0.1:6379> GOT FOO (error) ERR unknown command 'GOT' 127.0.0.1:6379> INCR MAS QUEUED 127.0.0.1:6379> EXEC (error) EXECABORT Transaction discarded because of previous errors. ...