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5+ curated questions with the same answer shape every time: quick recap, deep dive, pitfalls, and follow-ups. Coverage includes why background jobs, sidekiq setup basics, writing a worker, job retry and failure, and more.
Suggested path
Topics follow a teaching order. Each answer ends with a clear Next question control so you can move forward without hunting the list.
Sidekiq and background-job questions test whether a Rails developer understands the complete asynchronous lifecycle, not only `perform_async`. This module covers when work belongs outside a request, how web and worker processes share a queue store, native Sidekiq payloads and idempotency, retry and dead-job handling, and the Active Job adapter boundary. Each lesson distinguishes successful enqueueing from completed business work and treats failure, duplicate execution, monitoring, and deployment compatibility as part of the feature.
Full catalog
Topics are ordered for learning. Within each topic, rows are numbered 1–5 globally so you always know where you are. Collapse topics if you want a lighter view — use Expand all when you need the full list again.
Numbers 1–5 follow the order we recommend — click any row to open the full answer, or use the sticky Next link at the bottom of each page to go Q1 → Q5.