Ever wondered what happens when ActiveJob retries fail? Spoiler: Sidekiq takes over with 25 MORE attempts. Find out more in this blog post!

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ActiveJob provides a unified interface for background job processing in Rails, abstracting different queue backends like Sidekiq. When a job fails, ActiveJob retries it up to 5 times (configurable) with polynomial backoff. After exhausting ActiveJob retries, Sidekiq takes over with its own 25-attempt retry mechanism using exponential backoff. This dual-retry behavior can be controlled using `sidekiq_options retry: 0` (send to dead queue immediately) or `retry: false` (discard completely). ActiveJob offers lifecycle callbacks like `after_perform` and `after_discard` for handling success and failure scenarios. The article demonstrates testing strategies using `ActiveJob::TestHelper` and compares ActiveJob's developer-friendly approach with direct Sidekiq implementation.

Everything you should know about Background Jobs with ActiveJob

If it’s Rails, do it the Rails Way! Use ActiveJob!