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…

[画像] 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 robots. …

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…

Redisキャッシュの利用方法に関する詳細情報

開発

griegm 2021 年 9 月 16 日午前 5:15 3

素晴らしい、とても役立つ回答をありがとうございます！

「いいね！」 1

トピック		返信	表示
What type of details does redis store? Self-hosting	2	428	2023 年 3 月 21 日
What does Discourse use Redis for? Dev	5	3381	2022 年 8 月 18 日
Using Redis then dump data is just great Dev	4	1023	2016 年 4 月 12 日
How Discourse handle high HTTP request? Dev	2	588	2019 年 3 月 12 日
Huge increase in Redis use after changing hosts Self-hosting	9	1366	2021 年 3 月 14 日

Redisキャッシュの利用方法に関する詳細情報

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