Hey there! I’ve been performing some load tests on a Discourse instance and I noticed that when repeatedly fetching the same comment thread over and over the Redis cache hit rate went down, rather than up, which was a bit unexpected (for a mixture of reads/writes we saw a cache hit rate of up to 85…

[immagine] griegm: Does being logged-in/logged-out impact cache hit rates? For reference, the load test mentioned above was using an admin API key. This is the main thing here. The most aggressive cache happens for anonymous requests, so I’d suggest retrying the load test with some anon robot…

Awesome, thanks for the super helpful response!

I just re-ran the load test but with anonymous requests this time around, and we saw a huge performance improvement! Previously we were only able to hit around 25 requests per second on a single host, now we can hit 380! The Redis cache hit rate also went up from ~22% to ~66%. :slight_smile: Just t…

Maggiori dettagli su come viene utilizzata la cache Redis?

Sviluppatore

griegm 16 Settembre 2021, 5:15am 3

Fantastico, grazie per la risposta super utile!

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Maggiori dettagli su come viene utilizzata la cache Redis?

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