reliability

2 posts with the tag “reliability”

Introducing rdq: retry & dead-letter queues for any broker, any storage, any language

Jul 27, 2026 - 6 min read

Every event-driven system eventually asks the same question — a handler failed, now what? Today you answer it with broker-locked, language-locked, hand-rolled plumbing, and the DLQ you land in is a graveyard with no failure context and no safe replay. rdq is the missing bolt-on for that one narrow job.

No two workers, one task: how rdq claims work — and the UNIQUE collision redrive taught us

Jul 27, 2026 - 6 min read

Srajan Pathak

rdq author

rdq spreads work across a fleet of stateless workers with no leader and no membership protocol. The entire correctness argument rests on two primitives — an atomic claim and a lease. This is how they work, and the story of a UNIQUE collision that only appeared when a redriven task’s lease expired.