Nginx配置优化：从入门到高可用架构
Nginx Configuration: From Basics to High-Availability Architecture
| iDev Tech | 2026-05-12T14:00:00
全面讲解Nginx的核心配置、性能调优、反向代理、负载均衡和SSL/TLS最佳实践。
Comprehensive guide to Nginx core configuration, performance tuning, reverse proxy, load balancing, and SSL/TLS best practices.
核心配置优化worker_processes设为auto（自动匹配CPU核心数）；worker_connections建议设为4096或更高；启用sendfile、tcp_nopush和tcp_nodelay；gzip压缩级别设为6（兼顾压缩率和CPU开销）。反向代理与负载均衡upstream模块支持多种负载均衡算法：轮询（默认）、权重（weight）、IP哈希（ip_hash）和最少连接（least_conn）。配合health check模块实现故障自动摘除。proxy_pass配置中注意URI拼接规则。SSL/TLS优化启用HTTP/2；使用TLS 1.3（更快的握手、更强的安全性）；配置OCSP Stapling减少握手延迟；启用HSTS防止降级攻击；使用ssl_session_cache共享SSL会话。
Core Configuration OptimizationSet worker_processes to auto (matches CPU cores); worker_connections to 4096 or higher; enable sendfile, tcp_nopush, and tcp_nodelay; gzip compression level at 6 (balancing compression ratio and CPU overhead).Reverse Proxy and Load BalancingThe upstream module supports multiple algorithms: round-robin (default), weighted, ip_hash, and least_conn. Combined with health check modules for automatic failure removal. Pay attention to URI concatenation rules in proxy_pass configuration.SSL/TLS OptimizationEnable HTTP/2; use TLS 1.3 (faster handshake, stronger security); configure OCSP Stapling to reduce handshake latency; enable HSTS to prevent downgrade attacks; use ssl_session_cache for SSL session sharing.