NGINX Reverse DNS Module: Hostname-Based Access Control
by Danila Vershinin, February 2, 2026
Learn how to use the NGINX reverse DNS module (ngx_http_rdns) to verify client hostnames, block malicious traffic, and authenticate legitimate crawlers like Googlebot. This guide covers installation, configuration, and security best practices.
Read More...NGINX Bot Verification: Block Fake Crawlers
by Danila Vershinin, January 31, 2026
Learn how to verify and block fake search engine bots in NGINX using the bot-verifier module. This comprehensive guide covers installation, configuration, and testing of reverse DNS verification for Googlebot, Bingbot, and other crawlers.
Read More...NGINX Bot Protection Without CAPTCHA: Testcookie Guide
by Danila Vershinin, January 30, 2026
Learn how to implement NGINX bot protection using the testcookie module. This JavaScript-based challenge blocks automated traffic without frustrating legitimate users with CAPTCHAs.
Read More...NGINX Nchan: Build Real-Time Apps Without Node.js
by Danila Vershinin,
Learn how to build real-time web applications using NGINX Nchan module. This comprehensive guide covers WebSocket, Server-Sent Events, and long-polling implementations for chat systems and push notifications—all without Node.js.
Read More...NGINX VTS Module: NGINX Plus Monitoring
by Danila Vershinin, January 29, 2026
Learn how to install and configure the NGINX VTS (Virtual Host Traffic Status) module for free real-time monitoring. Get NGINX Plus-level traffic statistics, upstream monitoring, and Prometheus metrics without the commercial license cost.
Read More...NGINX Virtual Host: Host Multiple Domains on One Server
by Danila Vershinin, January 27, 2026
Learn how to configure NGINX virtual hosts (server blocks) to host multiple domains on one server. This guide covers basic setup, wildcard subdomains, server_name matching, default_server configuration, and SELinux considerations for Rocky Linux and RHEL systems.
Read More...NGINX Timeout Directives: Complete Configuration Guide
by Danila Vershinin, January 26, 2026
Master all NGINX timeout directives including proxy_read_timeout, client_body_timeout, keepalive_timeout, and send_timeout. Learn when to use each, production-ready values, and how to diagnose timeout issues.
Read More...NGINX Proxy Cache & Microcaching: Complete Guide
by Danila Vershinin,
Master NGINX proxy cache and microcaching to achieve up to 400x performance improvement. This comprehensive guide covers proxy_cache_path, proxy_cache_valid, thundering herd prevention with proxy_cache_lock, stale-while-revalidate patterns, and microcaching for dynamic content. Includes production-ready configurations tested on Rocky Linux and AlmaLinux.
Read More...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.
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.
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