Advanced Debugging: Tackling Complex Race Conditions and Out of Memory (OOM) Killer terminating PHP-FPM pool workers in Magento 2
Diagnosing PHP-FPM Worker Termination: A Tale of Two Evils When your high-traffic Magento 2 instance starts exhibiting intermittent failures, often manifesting as 502 Bad Gateway errors or outright unresponsiveness, the usual suspects are resource exhaustion and concurrency issues. Specifically, PHP-FPM workers being unceremoniously terminated by the Linux Out-of-Memory (OOM) Killer or succumbing to complex race […]