The Monday morning report: four hours of MySQL replica lag
Four hours of lag on a MySQL replica in a logistics system. How we diagnosed it, why Seconds_Behind_Master lies, and what actually fixed it.
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Four hours of lag on a MySQL replica in a logistics system. How we diagnosed it, why Seconds_Behind_Master lies, and what actually fixed it.
A real MySQL 8.0.34→8.0.45 patching workflow: broken views blocking mysqldump, GTID warnings, replica role check, and RPM upgrade order on RHEL 8.
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