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Sidekiq
What Sidekiq is
Sidekiq is a self-hosted framework for processing application work in the background. A client converts job data to JSON and places it in a Redis queue; Sidekiq server processes retrieve and run those jobs. Redis also stores job and operational data. The framework includes scheduled jobs, error handling, a Web UI, middleware, a Ruby API, and support for long-running jobs. Sidekiq OSS is open source under LGPL and has a free plan for hobbyists. Sidekiq Pro adds batches and callbacks for grouped jobs, protects jobs when processes crash or receive a KILL signal, and retries delivery after temporary Redis errors. Enterprise adds encryption, rate limiting, periodic and unique jobs, historical metrics, multi-core processing, and rolling restarts. Enterprise encryption covers only the last job argument, while errors and backtraces stay plaintext. Listed commercial plans include Pro at $995 a year and Enterprise at $269 a month. Development and staging use is free and unlimited.
Who it suits
Sidekiq suits developers building Ruby applications that need background, scheduled, or long-running jobs. OSS is aimed at hobbyists, Pro at small businesses, and Enterprise at medium to large companies.
What it does well
- Free LGPL open-source plan
- Redis-backed background job queues
- Scheduled and long-running jobs
- Pro batches and callbacks
- Enterprise adds rate limiting and metrics
What to know first
- Self-hosted deployment required
- Enterprise encryption leaves errors plaintext
- Pro costs $995 a year
- Priority support excludes application infrastructure
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Sidekiq OSS | Free · Open source · LGPL · hobbyists | Free |
| Sidekiq Enterprise | Starting at $269/mo · Commercial license · starts at 100 threads · volume discounts may apply | $269 a month |
| Sidekiq Pro | $995/year · Commercial license · priority email support · no server or environment limit | $995 a year |
As sidekiq.org lists them, read 3 Oct 2026. The maker's own page has the final word.
Verdict
Sidekiq provides Redis-backed background processing with a free OSS edition and expanded Pro and Enterprise capabilities. The self-hosted model and Ruby focus should fit teams prepared to operate Redis and application workers.
Facts from Sidekiq's own pages
- Audience
- The maker's comparison lists hobbyists for OSS, small business for Pro, and medium to large companies for Enterprise. · sidekiq.org, 3 Oct 2026
- Core features
- The plans comparison lists scheduled jobs, error handling, a Web UI, a Ruby API, middleware, and long-running jobs across OSS, Pro, and Enterprise. · sidekiq.org, 3 Oct 2026
- Data store
- Sidekiq stores job and operational data in Redis. · sidekiq.org, 3 Oct 2026
- Deployment
- The maker documents configuring Sidekiq with Redis URLs through environment variables, including REDIS_URL and Heroku's REDIS_PROVIDER pattern. · sidekiq.org, 3 Oct 2026
- Encryption scope
- Enterprise encryption protects only the last job argument; error messages and backtraces remain plaintext. · sidekiq.org, 3 Oct 2026
- Enterprise capabilities
- Enterprise includes encryption, rate limiting, periodic jobs, unique jobs, historical metrics, multi-core processing, and rolling restarts, plus Pro features. · sidekiq.org, 3 Oct 2026
- Founded
- 2012 · sidekiq.org, 28 Sept 2026
- Free trial
- The maker says it does not offer pre-sales demos or free trials, but a purchased month of Pro or Enterprise may be tried and refunded if the customer is unhappy. · sidekiq.org, 3 Oct 2026
- Headquarters
- Lake Oswego, Oregon, United States · sidekiq.org, 28 Sept 2026
- Integrations
- Sidekiq's wiki says server processes boot Rails, making the Rails API, including Active Record, available to jobs and workers. · sidekiq.org, 3 Oct 2026
- Job model
- The client serializes job data as JSON and pushes it into a Redis queue, where Sidekiq server processes pull and process jobs. · sidekiq.org, 3 Oct 2026
- Limits
- Enterprise licensing is based on production worker thread count; development and staging use is free and unlimited. · sidekiq.org, 3 Oct 2026
- Pro reliability
- Sidekiq Pro uses Redis RPOPLPUSH to protect jobs when a process crashes or receives a KILL signal, and its client retries delivery after transient Redis errors. · sidekiq.org, 3 Oct 2026
- Pro workflows
- Sidekiq Pro adds batches and callbacks for tracking grouped jobs and building more complex workflows. · sidekiq.org, 3 Oct 2026
- Purpose
- Sidekiq is a framework for background job processing that scales applications by performing work in the background. · sidekiq.org, 3 Oct 2026
- Support
- Commercial priority support covers one incident per quarter, has a maximum response time of two working days, and excludes the customer's application and infrastructure. · sidekiq.org, 3 Oct 2026
Where Sidekiq stands on Freedom251
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