nginx.conf File — Nginx Configuration

Nginx configuration files define the behavior of the Nginx web server and reverse proxy, one of the most popular web servers powering approximately 34% of all websites. The configuration uses a directive-based syntax with nested context blocks (http, server, location, upstream) that define virtual hosts, URL routing, proxying, load balancing, SSL/TLS settings, caching, compression, rate limiting, and access control. Server blocks define virtual hosts that respond to specific domain names and ports, while location blocks match URL patterns to configure request handling for specific paths. Nginx supports regular expression matching in location directives, variables for dynamic configuration, rewrite rules for URL manipulation, and try_files for fallback handling. The configuration format supports include directives for modular organization across multiple files. Nginx is used as a web server, reverse proxy, load balancer, HTTP cache, and mail proxy. Common configurations include serving static files, proxying to application servers (Node.js, Python, Ruby), SSL termination, and microservice routing. The configuration is tested with nginx -t before reloading with nginx -s reload for zero-downtime updates.