NGINX Gzip Compression: The Complete Configuration Guide
by Danila Vershinin, January 25, 2026
Learn how to configure NGINX gzip compression for optimal web performance. This comprehensive guide covers gzip_types, gzip_comp_level, gzip_min_length, and all other gzip directives with insights from NGINX source code analysis and production-tested configurations.
Read More...NGINX CORS Configuration: The Complete Guide
by Danila Vershinin, January 24, 2026
Learn how to properly configure CORS in NGINX with this comprehensive guide. Discover why most tutorials are wrong, understand the critical `always` parameter, handle preflight requests, and implement production-ready configurations for credentials and multiple origins.
Read More...NGINX 502 Bad Gateway: Every Cause and Fix (Complete Guide)
by Danila Vershinin,
Learn how to fix NGINX 502 Bad Gateway errors. This comprehensive guide covers every cause including PHP-FPM issues, socket permissions, buffer problems, and more with tested solutions.
Read More...NGINX Location Priority: Complete Regex Matching Guide
by Danila Vershinin,
Master NGINX location priority and regex matching. Learn how =, ^~, ~, and ~* modifiers work, understand the matching algorithm from NGINX source code, avoid common security pitfalls, and use tools like Gixy to validate your configuration.
Read More...NGINX Load Balancing: Complete Guide to Algorithms & Setup
by Danila Vershinin, January 23, 2026
Learn how NGINX load balancing works under the hood. This complete guide covers all load balancing algorithms including round-robin, least connections, IP hash, consistent hashing, and the Power of Two Choices, with production-ready configuration examples.
Read More...NGINX Reverse Proxy: The Complete Guide
by Danila Vershinin,
Master NGINX reverse proxy configuration from basics to advanced. Learn proxy_pass, upstream load balancing, headers, buffering, timeouts, WebSockets, and troubleshooting 502/504 errors with production-ready examples.
Read More...504 Gateway Timeout NGINX: How to Fix It
by Danila Vershinin, January 22, 2026
Stop copy-pasting timeout fixes. Learn which NGINX directive actually causes 504 errors and how to fix it properly—whether you’re proxying to Varnish, Node.js, PHP-FPM, or any HTTP backend.
Read More...NGINX FastCGI Keepalive: Persistent PHP-FPM Connections
by Danila Vershinin, January 21, 2026
Learn how to configure persistent FastCGI connections between NGINX and PHP-FPM using fastcgi_keep_conn and upstream keepalive directives. Includes production-ready configurations, PHP-FPM tuning tips, and troubleshooting guidance.
Read More...NGINX Browser Caching for Static Files: Cache-Control, Expires & Cache Busting
by Danila Vershinin, January 20, 2026
Master NGINX browser caching for static files with this comprehensive guide. Learn Cache-Control and Expires headers, cache-busting strategies, versioned URLs, and the immutable directive. Includes production-ready configurations tested on RockyLinux 9 and AlmaLinux 10, performance optimizations, CDN integration, and troubleshooting tips.
Read More...How to Serve WebP Images Automatically with NGINX: Complete 2026 Guide
by Danila Vershinin, January 19, 2026
Learn how to automatically serve WebP images with NGINX to supporting browsers while falling back to JPEG/PNG for others. Covers content negotiation, the Vary header, on-the-fly conversion with nginx-module-webp, and the PageSpeed module.
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