Why Your Sidekiq Jobs Are Slower Than You Think, and How AppSignal Fixes That
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Sidekiq jobs often run slower than expected due to N+1 queries, missing database indexes, synchronous HTTP calls, oversized job payloads, Redis inefficiencies, retry storms, and host-level resource spikes. Each issue is explained with code context and demonstrated through AppSignal's performance dashboards, which surface slow queries, job timelines, Redis traces, retry/dead job counts, and host metrics — helping developers pinpoint bottlenecks without manually digging through code.
Table of contents
Jobs with N+1 Queries Inside ThemMissing or Misconfigured Database IndexesSynchronous External HTTP CallsAllocating Too Much Work in a Single Job (No Batching Strategy)Spikes in Redis UsageRetries and Dead Jobs Consuming Queue CapacityCould Your Host Be the Problem?Conclusion226 Impressions