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في هذا الدرس

recognize work that must have a single active runner.

الموضوعات المخطط لها

• With replicas, every instance runs the same scheduled jobs and consumers unless you prevent it.
• Examples: nightly reconciliation, sending a daily report, an outbox relay without SKIP LOCKED.
• Prefer designs that need no coordination: idempotent work, partitioned work, or SKIP LOCKED queues.
• When one runner truly is required, you need a lock or a leader.
• Decide what happens if the runner dies: another must take over.