Automate Operations with Fault-Tolerant Worker Queues
Campaign automation that duplicates? Document ingestion that drops files? Background queues that lose jobs on restart? I build atomic claim-leasing, idempotency keys, and three-category lease recovery so every job runs exactly once — even through host failure. One production queue: 500,000+ jobs daily with zero duplicate dispatches across 8 months.
Problems this solves
What you get
Who it is for
Organisations running background processing at scale — marketing automation, document ingestion, batch data jobs, campaign triggers. Suitable where duplicate execution causes real business harm: double-charging customers, sending duplicate emails, or corrupting ledger data.
How it works
The claim-lease pattern replaces SELECT-then-UPDATE with a single atomic SQL statement: UPDATE job SET ClaimedBy = @worker, ClaimExpires = @timeout OUTPUT INSERTED.* WHERE ClaimedBy IS NULL. No polling gap, no duplication window. The outbox table doubles as the recovery source — if a host fails, uncompleted jobs are reclaimed by the next available worker after the lease expires.
Related work
See the distributed worker queue case study — atomic claim-lease with outbox recovery. Outcome: 500,000+ jobs daily, zero duplicate dispatches across 8 months. Also see egress-controlled document ingestion: 2.3 million documents, zero SSRF incidents.
View related case studiesDoes your background processing survive a host failure?
Book a free 30-minute call. I will review your current worker architecture and explain how atomic claim-leasing eliminates duplicate execution at any scale.