Is it safe to flush redis?

installation
1

Hi, I’m experiencing the problem described here – high RAM use on redis:

https://meta.discourse.org/t/redis-server-hogging-ram/6415

I see that this bug was fixed, so I’ll update my discourse installation shortly. Before doing so, I was considering flushing redis to clear up space (I’m almost at the limit). But I don’t know exactly what discourse uses redis for. Is it safe to just flush it? Will my users see any disruption if I do so?

Thanks!

4 Likes
2

Sidekiq uses it for event scheduling. You need to restart Sidekiq after flushing Redis.

1 Like
3

I recall an issue with Sidekiq where we have to kill it when memory use gets high, is that still true @sam?

4

Sidekiq is safe to flush, BUT you will lose a few jobs when it is flushed (people will miss some emails) AND all clients will lose position in message bus, so blue bubble will stop working till they refresh browser.

5 Likes
5

Thanks! Flushed with no issues. :smile: