NGINX Map

NGINX is a high-performance Web server, mostly used to serve HTTP requests.

Configuration

• NGINX location directive
• NGINX HTTP variables to log
• Byte-range request
• Proxy
  • Headers in NGINX
  • Health Checks in NGINX
    • How NGINX round-robin upstream implements passive health checks
  • Upstream Keepalive
• NGINX realip configuration for Cloudflare

Optimization

• Optimize single-box NGINX performance
• NGINX proxy cache

Access Control

• NGINX IPv6 rate limiting
• Customize error page of ngx.exit (with Lua)

Code Walkthrough

• NGINX code walkthrough - Client closed request
• NGINX code walkthrough - Upstream connect timeout
• NGINX thundering herd problem

Quick Notes

1. NGINX reserves a large amount of RAM if worker_connections is set to an unreasonable value.
2. server_tokens is best turned off to reduce metadata leak and save bandwidth.
3. Nested locations are a trap where proxy_pass does not get inherited. Avoid them if possible.
4. Increase proxy_buffers and client_body_buffer_size to save a temporary file read and write, but note that it also increases memory pressure.