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NGINX Rewrite Rules: The Complete Guide to URL Rewriting


by Danila Vershinin, January 25, 2026

Master NGINX rewrite rules and URL rewriting with this comprehensive guide. Learn the difference between return and rewrite directives, capturing groups, rewrite flags, and real-world SEO migration scenarios with tested configurations.

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NGINX Gzip Compression: The Complete Configuration Guide


by Danila Vershinin,

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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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