QueueClassic/queue_classic

Health v2 · maintenance only

Adoption not part of the score

1186 stars · 152 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

queue_classic is a Ruby gem providing a simple, efficient background job queue backed by PostgreSQL instead of a separate service like Redis. It leverages Postgres features such as LISTEN/NOTIFY, SKIP LOCKED, and row locking, and supports ActiveJob integration.

Use cases

• run background jobs in a Rails app without Redis
• enqueue jobs inside database transactions atomically
• process async tasks using an existing PostgreSQL database
• run multiple queues with heterogeneous workers
• replace Resque or Sidekiq with a Postgres-backed queue

When to choose

• you already use PostgreSQL and want to avoid adding Redis or another queue service
• you need transactional job enqueueing that only fires when the surrounding transaction commits
• you want a simple, low-operations-overhead ActiveJob-compatible queue

When to avoid

• you need very high throughput beyond what Postgres-backed polling can handle
• you require advanced features like scheduled/recurring jobs, retries with specific exceptions, or a rich admin UI out of the box
• your stack does not already run PostgreSQL

Facets

library · maturity maintenance

message-queue database scheduling backend databases web-development developer-tools ruby postgresql-backed-queue activejob-adapter background-jobs listen-notify transactional-enqueue postgresql

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markdown · JSON · MCP: product_card(name="QueueClassic/queue_classic")