This article explains the fundamentals of concurrency, how Nginx and HAProxy handle connections and requests, provides configuration examples, monitoring metrics, system resource limits, and performance testing techniques to optimize high‑availability load‑balancing deployments.
This article reviews Linux virtual memory layouts for 32‑bit and 64‑bit systems, explains the different memory segments, shows how the default 8 MiB thread stack impacts virtual address consumption, and calculates practical thread limits based on virtual memory and kernel parameters.
The article explains the “Too many open files” error in Kubernetes, clarifies that it refers to exceeding system file‑handle limits, shows how to inspect current usage with ulimit and lsof, and provides step‑by‑step commands to temporarily or permanently raise the limits and troubleshoot the application code.
This guide explains how to view and modify Linux's open file descriptor limits using commands like ulimit, sysctl, and by editing system configuration files, covering both system-wide and per‑user settings for improved application performance.
This article explains why the “Too many open files” error occurs on Linux, analyzes the three related kernel parameters (fs.nr_open, nofile, and fs.file-max), shows the relevant source code, and provides step‑by‑step configuration guidance to safely increase file descriptor limits.
This guide explains why Linux limits the number of open files, shows how to view current limits, and provides three practical methods—using the ulimit command, editing PAM limits, and adjusting sysctl settings—to permanently increase both soft and hard file‑descriptor limits.
