Celery vs Sidekiq: What are the differences?
Developers describe Celery as "Distributed task queue". Celery is an asynchronous task queue/job queue based on distributed message passing. It is focused on real-time operation, but supports scheduling as well. On the other hand, Sidekiq is detailed as "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 3/4 to make background processing dead simple.
Celery and Sidekiq are primarily classified as "Message Queue" and "Background Processing" tools respectively.
"Task queue" is the top reason why over 84 developers like Celery, while over 120 developers mention "Simple" as the leading cause for choosing Sidekiq.
Celery and Sidekiq are both open source tools. It seems that Celery with 12.7K GitHub stars and 3.3K forks on GitHub has more adoption than Sidekiq with 9.66K GitHub stars and 1.66K GitHub forks.
StackShare, SendGrid, and New Relic are some of the popular companies that use Sidekiq, whereas Celery is used by Sentry, Ansible, and OpenLabel. Sidekiq has a broader approval, being mentioned in 346 company stacks & 77 developers stacks; compared to Celery, which is listed in 271 company stacks and 77 developer stacks.
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What is Celery?
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