NGINX error_log_write Module: Conditional Logging
by Danila Vershinin, February 12, 2026
Learn how to use the NGINX error_log_write module for conditional error logging. Write custom log entries based on request attributes, variables, and conditions directly from your NGINX configuration.
Read More...NGINX substitutions filter module: Complete Guide
by Danila Vershinin,
Learn how to use the nginx substitutions filter module for powerful response body transformations. This comprehensive guide covers all directives, regex patterns, practical examples, and important caveats for domain migrations, link rewriting, and content injection.
Read More...NGINX JavaScript (njs): Add Scripting to NGINX
by Danila Vershinin, February 11, 2026
Learn how to extend NGINX with JavaScript using the njs module. This comprehensive guide covers installation, configuration, and 11 practical examples including custom handlers, authentication, subrequests, shared dictionaries, and the Fetch API.
Read More...NGINX Pipelog Module: Send Access Logs to External Programs
by Danila Vershinin, February 10, 2026
Learn how to use the NGINX pipelog module to send access logs to external programs via Unix pipes. Enable real-time log processing, syslog integration, and custom log aggregation without disk I/O overhead.
Read More...Phantom Token NGINX Module: Secure API Gateway Auth
by Danila Vershinin,
Learn how to implement the Phantom Token pattern in NGINX to secure your APIs. This module exchanges opaque access tokens for JWTs at the gateway level, protecting sensitive claims from client applications while working with any RFC 7662-compliant OAuth provider.
Read More...NGINX Echo Module: Shell-Style Scripting in Your Config
by Danila Vershinin,
Learn how to use the NGINX echo module for debugging, testing, and building lightweight endpoints. Complete guide with installation, all 19 directives, 10 variables, practical examples, and security best practices.
Read More...NGINX Untar Module: Serve Files Directly from Tar Archives
by Danila Vershinin, February 9, 2026
Learn how to use the NGINX untar module to serve static files directly from tar archives without extraction. This zero-copy module indexes archives and streams files efficiently using sendfile.
Read More...NGINX Link Function Module: Embed C/C++ in NGINX
by Danila Vershinin,
Learn how to use the NGINX link function module to embed custom C/C++ application logic directly into NGINX. Build high-performance APIs, authentication handlers, and dynamic content generators without a separate application server.
Read More...NGINX Keyval Module: Dynamic Key-Value Store Inside NGINX
by Danila Vershinin,
Learn how to use the NGINX keyval module to create a dynamic key-value store directly inside NGINX. Build feature flags, IP blocklists, maintenance mode toggles, A/B testing, and canary deployments — all without restarting NGINX or adding backend services.
Read More...NGINX max_headers: Prevent Header-Flooding DoS
by Danila Vershinin, February 8, 2026
Learn how to use the max_headers directive in nginx-mod to limit the number of HTTP request headers and protect your server from header-flooding DoS attacks. Includes installation, configuration, and testing on RHEL-based systems.
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