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backend

Backend engineering articles on API design, database modelling, microservices, performance tuning, and the architectural trade-offs behind each choice.


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Why Is MySQL Using 100% CPU? Causes and How to Fix It
MySQL pinned at 100% CPU? Find the queries causing it, fix the real cause instead of upsizing the server, and stop it coming back. A practical diagnosis guide.
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Why Is MySQL So Slow? A Diagnosis Checklist That Finds the Cause
MySQL slow and you don't know why? Work through this checklist, from slow queries and missing indexes to locking, disk, and config, to find the real cause fast.