Master the world's most popular high-performance web server & reverse proxy. From zero to production-ready in one course.
Nginx wears many hats in modern infrastructure:
🔀 Reverse Proxy — Sits in front of app servers (Node.js, Python, Go) and forwards requests. Adds caching, compression, and TLS in one hop.
⚖️ Load Balancer — Distributes traffic across backend pools using round-robin, least_conn, ip_hash, or weighted strategies.
📦 API Gateway — Rate limiting, request routing, JWT validation, and upstream health checks make it a lightweight API gateway.
🗄️ Media Streaming — ngx_http_mp4_module enables pseudo-streaming of MP4 videos with byte-range seeking.
🛡️ WAF Front-Door — Combined with ModSecurity or NAXSI it acts as a Web Application Firewall blocking SQLi, XSS, and more.
Nginx vs Apache — both great, but different philosophies:
🏗️ Apache uses a process/thread per connection model (prefork or worker MPM). Each connection gets its own thread, consuming ~8MB RAM. Under heavy load this adds up fast.
⚡ Nginx uses an async event loop. A single worker can juggle 10,000 connections in the same memory that Apache uses for one thread.
📄 Apache's .htaccess allows per-directory config without server restart — great for shared hosting. Nginx has no per-directory override; all config lives in server blocks, making it faster and more predictable.
🔌 Apache's mod_php runs PHP inside the server process. Nginx always delegates to an external php-fpm pool — cleaner memory isolation, easier scaling.
Pro tips Zeal covers in depth during the course:
📐 Always test before reload: nginx -t validates your config without downtime. Never skip this step in production.
🗜️ Enable Gzip: Add gzip on; gzip_types text/plain application/json; to cut bandwidth by 60–80% for text assets.
🚦 Rate Limiting: limit_req_zone + limit_req protects your origin from brute-force attacks and DDoS bursts.
📋 Structured Logs: Override log_format to emit JSON — makes log ingestion with Loki or Elasticsearch trivial.
🔄 Graceful Reload: nginx -s reload sends SIGHUP — workers finish in-flight requests before adopting new config. Zero dropped connections.