Redis Persistence Explained: What RDB and AOF Actually Save
Someone registers for your event. The application increments a counter in Redis, receives a successful reply, and confirms the registration. One second later, the machine loses power. Will that increment still be there when Redis starts again? The answer depends on what Redis wrote to disk, when it wrote it, and which files it loads during recovery. Those three questions make RDB and AOF much easier to understand than memorizing “snapshot” and “log” as definitions. ...