Building a Simple yet Robust Job Queue System Using Postgres

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IntroductionIn this article, we’ll walk through the rationale behind using Postgres as a queue, explore the schema design, implement concurrency-safe task polling with SELECT … FOR UPDATE SKIP LOCKED, and ensure that only one worker processes a specific task at any given time. By the time we’re done, you’ll have the blueprint for a dependable, transactionally-secure system for background task processing—all running in Postgres.

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