Rate-Limited Reminder Recovery: Idempotent Queues After Webhook and Email Send Failures
Short answer: put each user reminder on a queue, make the consumer idempotent, retry transient delivery failures with backoff, and move exhausted wo…
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Надёжная асинхронная коммуникация: повторы, дубликаты и dead letter queues
Представим обычную обработку заказа. Сервис заказов публикует событие order.created . Сервис склада получает его и резервирует товар в PostgreSQL. П…