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AWS Certified Developer – Associate DVA-C02 · Domain 4: Troubleshooting and Optimization

Stream and queue troubleshooting: Kinesis IteratorAge, parallelization factor, SQS dead-letter queues and redrive

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Last reviewed September 25, 2026 · Leer en español

When a stream or queue consumer falls behind or keeps failing, messages pile up and data arrives late. The exam describes these symptoms through specific metrics, and you need to know what each one means and which setting fixes it.

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