ruby-on-rails - 由于 brpop，Rails Sidekiq Redis 长时间运行

Question

使用 Sidekiq 对新的 Ruby on Rails 应用程序进行 Newrelic 监控，尚未实现的逻辑和流量表明 Redis 在 brpop 上花费了很长时间(大约 2s-3s)操作。

这是为什么？

这是性能方面的问题吗？

Answer 1

根据本期信息
https://github.com/mperham/sidekiq/issues/2581这是 Sidekiq 的正常行为:

见 @jonhyman评论

brpop is a blocking command, too, so if you don't have a lot of jobs then each one will block for 1 second.

见 @ryansch评论:

You want that behavior. That's what sidekiq is doing while it's waiting for work. It's a long running blocking operation because redis can then tell sidekiq about work as soon as it arrives. The alternative would be polling which we certainly don't want. I see the same thing in my new relic dashboard. No worries.

所以不，这不是问题。 Sidekiq 实际上是想变得更足智多谋，让 Redis 做一些肮脏的工作，即通过在该 brpop 上保持连接来让他知道什么时候有新任务。手术