queues

2 articles

Diagram showing a background job being retried multiple times while a database enforces idempotency through a unique constraint

Designing Idempotent Background Jobs: Retries, Locks, and the Exactly-Once Illusion

Exactly-once processing doesn't exist in distributed systems—here's how to design background jobs that survive retries, crashes, and duplicate deliveries anyway.

Aug 26, 2026·5 min read

Architecture

Background Job Processing Patterns

Not everything belongs in the request-response cycle — queues, workers, retries, and dead letter patterns for reliable background processing.

May 16, 2020·3 min read

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