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NGINX Upload Module: File Upload Handling Guide


by Danila Vershinin, February 2, 2026

Learn how to configure the NGINX upload module for efficient file upload handling. This comprehensive guide covers installation, configuration directives, resumable uploads, security best practices, and performance optimization for system administrators managing production servers.

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NGINX JWT Authentication Module: Secure Your APIs


by Danila Vershinin,

Learn how to implement native JWT authentication directly in NGINX using the nginx-module-jwt. This lightweight module validates JSON Web Tokens at the edge, reducing backend load and simplifying your API security architecture.

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NGINX Length Hiding Module: Does It Actually Prevent BREACH Attacks?


by Danila Vershinin,

The NGINX length hiding module is often recommended for BREACH attack mitigation, but security research shows it only slows down attacks, not prevents them. Learn what actually protects against BREACH: SameSite cookies, CSRF token rotation, and proper application architecture.

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NGINX Reverse DNS Module: Hostname-Based Access Control


by Danila Vershinin,

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.

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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.

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NGINX srcache: Transparent Memcached and Redis Caching Layer


by Danila Vershinin, January 30, 2026

Learn how to implement transparent caching in NGINX using the srcache module with memcached or Redis backends. This comprehensive guide covers installation, configuration, cache key strategies, and production-ready examples for Rocky Linux, AlmaLinux, and RHEL systems.

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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.

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NGINX Sticky Sessions: Cookie-Based Load Balancing


by Danila Vershinin, January 29, 2026

Learn how to implement NGINX sticky sessions with cookie-based load balancing. This comprehensive guide covers installation, configuration, security best practices, and troubleshooting for Rocky Linux, AlmaLinux, and RHEL systems.

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NGINX Zstd Compression: Complete Configuration Guide


by Danila Vershinin, January 27, 2026

Learn how to configure Zstandard (zstd) compression in NGINX for faster websites. Complete guide with installation, configuration examples, performance benchmarks comparing zstd vs gzip vs Brotli, and best practices for RHEL, CentOS, Rocky Linux, and AlmaLinux.

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How to install and configure CAPTCHA NGINX module in CentOS/RHEL


by Danila Vershinin, October 8, 2021

Implementing CAPTCHA image generation and validation using NGINX module

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