You are using Redis with RDB persistence enabled for legacy reasons, a specific use case or simply because that’s the default persistence method and you would like to switch to AOF persistence by default.

As a Redis user, you will most probably encounter this situation a day. You are wondering what is the best approach to migrate from one persistence format to another or to use both?

Unfortunately, Redis requires to restart your server to enable AOF persistence. Here is a 4 steps process to reduce downtime:

1. Create a copy of your existing RDB backup file.
2. From a Redis client trigger the command bgrewriteaof. This will create a backup file (named by default appendonly.aof) using the AOF format.
3. Edit your redis.conf to enable AOF persistance with the appendonly yes configuration line.
4. Restart your Redis server.