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Hassan Raza
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DynamoDB
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An SMS Queue That Wouldn't Drain, and the DynamoDB Row Every Send Rewrote
Oct 6, 2026 · 9 min read
In September 2026 an SMS backlog on AWS drained at four or five messages a minute, and a few weeks later adding workers stopped making sends faster. How I drained the queue by hand, and the DynamoDB items every send was rewriting.