Master Nginx—the powerful, high-performance web server and reverse proxy trusted by millions of websites. This comprehensive guide covers everything from architecture and installation to advanced configurations, security best practices, and troubleshooting, with easy-to-understand examples and diagrams.

Master SQL database indexes with this complete in-depth guide. From fundamental concepts to advanced optimization strategies, learn all index types, when to use them, performance tuning techniques, and maintenance best practices—with practical examples for MySQL, PostgreSQL, and SQL Server.