Firebase Queue

Firebase Queue is a fault-tolerant, multi-worker, multi-stage job pipeline built on the Firebase Realtime Database. The current stable version is 1.6.1, with a low release cadence (last release in 2016). It allows you to define job processing functions that run in workers, automatically handling task lifecycle (reserved, started, finished, error). Key differentiators: direct integration with Firebase RTDB, no external message broker needed; supports multiple workers and stages; focuses on reliability with automatic retries and error handling. Alternatives like Bull or Kue require Redis. Note: this library is no longer actively maintained; users are advised to migrate to Google Cloud Tasks or Pub/Sub.