Simple, efficient background processing for Ruby
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sidekiq.gemspec Bump redis-rb to v3.3.3 (#3441) Apr 25, 2017


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Simple, efficient background processing for Ruby.

Sidekiq uses threads to handle many jobs at the same time in the same process. It does not require Rails but will integrate tightly with Rails to make background processing dead simple.

Sidekiq is compatible with Resque. It uses the exact same message format as Resque so it can integrate into an existing Resque processing farm. You can have Sidekiq and Resque run side-by-side at the same time and use the Resque client to enqueue jobs in Redis to be processed by Sidekiq.


Version Latency Garbage created for 10,000 jobs Time to process 100,000 jobs Throughput
Sidekiq 4.0.0 10ms 151 MB 22 sec 4500 jobs/sec
Sidekiq 3.5.1 22ms 1257 MB 125 sec 800 jobs/sec
Resque 1.25.2 - - 420 sec 240 jobs/sec
DelayedJob 4.1.1 - - 465 sec 215 jobs/sec


Sidekiq supports CRuby 2.2.2+ and JRuby 9k.

All Rails releases >= 4.0 are officially supported.

Redis 2.8 or greater is required. 3.0.3+ is recommended for large installations with thousands of worker threads.


gem install sidekiq

Getting Started

See the Getting Started wiki page and follow the simple setup process. You can watch this Youtube playlist to learn all about Sidekiq and see its features in action. Here's the Web UI:

Web UI

Want to Upgrade?

I also sell Sidekiq Pro and Sidekiq Enterprise, extensions to Sidekiq which provide more features, a commercial-friendly license and allow you to support high quality open source development all at the same time. Please see the Sidekiq homepage for more detail.

Subscribe to the quarterly newsletter to stay informed about the latest features and changes to Sidekiq and its bigger siblings.


Please do not directly email any Sidekiq committers with questions or problems. A community is best served when discussions are held in public.

If you have a problem, please review the FAQ and Troubleshooting wiki pages. Searching the issues for your problem is also a good idea.

Useful resources:

  • Product documentation is in the wiki.
  • Release announcements are made to the @sidekiq Twitter account.
  • Here's a Reddit forum dedicated to Sidekiq discussion
  • The Sidekiq tag on Stack Overflow has lots of useful Q & A.

No support via Twitter, 140 characters is not enough.

Every Friday morning is Sidekiq happy hour: I video chat and answer questions. See the Sidekiq support page for details.


Sidekiq stays fast by using the JProfiler java profiler to find and fix performance problems on JRuby. Unfortunately MRI does not have good multithreaded profiling tools.


Please see LICENSE for licensing details.


Mike Perham, @mperham / @sidekiq, /