Solid Queue

Self-hosted

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Freedom report

One barScore 5.3

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

Solid Queue is ranked #27 of 37 in task queue software on Freedom251. It runs on Self-hosted.

Compared on task queue software

Deployment model: self_hosted
Custom retry policy: Yes
Scheduled jobs: Yes

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The record

Purpose: Solid Queue is a database-backed queuing backend for Active Job.
Job features: It supports delayed jobs, concurrency controls, recurring jobs, pausing queues, per-job numeric priorities, queue-order priorities, and bulk enqueuing.
Database support: It can use MySQL, PostgreSQL, or SQLite, and uses FOR UPDATE SKIP LOCKED when available to avoid lock waits while polling jobs.
Rails and Ruby requirements: The minimum supported versions are Rails 7.1 and Ruby 3.2, and Solid Queue is configured by default in new Rails 8 applications.
Scaling: It can run on the web server or separate servers and supports horizontal scaling across multiple machines.
Job execution: Workers can run jobs using threads or fibers, and the supervisor can run workers and dispatchers in fork or async mode.
Active Job handling: Solid Queue relies on Active Job for retries, discarding, error handling, serialization, and delays.
Dashboard integration: The project recommends Mission Control Jobs for inspecting jobs and retrying or discarding failed jobs.
Puma integration: A Puma plugin can run the Solid Queue supervisor alongside Puma, but phased restarts are not currently supported by the plugin.
Throughput limitation: For highest throughput, the project recommends MySQL 8+, MariaDB 10.6+, or PostgreSQL 9.5+; older versions can encounter lock waits with multiple workers on the same queue.
License: The project is available under the MIT License, which grants use, copying, modification, distribution, sublicensing, and sale subject to its conditions.
Transactional behavior: A separate queue database is the default because relying on transactional integrity between app data and jobs can cause behavior changes if the backend or database setup changes.

Where it ranks on Freedom251

Best Task Queue Software in 2026#27 of 37

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Sources

github.com/rails/solid_queue· checked 5 Oct 2026
github.com/rails/solid_queue/blob/main/MIT-LICENSE· checked 5 Oct 2026