Sucker Punch is an asynchronous job processor for Ruby that runs jobs in-process using concurrent-ruby, which means no external services are required and jobs can be queued quickly for lightweight workloads.

While not a replacement for dedicated job systems at scale, it is useful for small apps, ephemeral tasks, and environments where adding Redis or Postgres workers is undesirable.

Alternatives include Delayed Job for database-backed reliability or Sidekiq and GoodJob for production-grade workloads.