3 docs tagged with "dlq"

Amazon SQS for DVA-C02 — standard vs FIFO queues, visibility timeout, message retention, DLQ, long polling, delay queues, and Lambda integration via Event Source Mapping. Key exam patterns covered.

Deep dive into Kafka consumer lag — offset mechanics, lag calculation, root cause diagnosis, scaling strategies, and non-blocking retry topics (DLQ, multi-tier backoff, 2-phase consumer commits).

A comprehensive guide to the Dead Letter Queue (DLQ) pattern — covering poison pill handling, retry strategies, alternatives comparison, AWS SQS / Kafka / RabbitMQ implementations, and production deep dives for senior engineers.