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Linux·May 6, 2026·11 min read

Too Many Open Files: The Linux Limit That Crashes Production at 3 AM

Your service runs fine for weeks, then suddenly fails with 'too many open files' under load. Three layers of fd limits, why the wrong one bites first, and how to set them so this stops happening.

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Linux·Apr 25, 2026·8 min read

cgroups, Pod Memory Limits, and What Actually Gets Counted

Your pod's memory limit isn't measuring what you think it is. A tour of cgroup v2 accounting and the surprises hiding inside memory.current.

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