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Annie Ghazali
Annie Ghazali

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File Descriptors: The OS Limit That Takes Down PostgreSQL

Most PostgreSQL outages that trace back to file descriptor exhaustion get misread as a database problem. The failure is one layer down: the kernel runs out of file descriptors and PostgreSQL takes the hit. This post covers how that happens under high connection counts, how to read the log sequence when it does, and how to fix it.

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