Nginx is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Unlike traditional servers, Nginx doesn’t rely on threads to handle requests. Instead it uses a much more scalable event-driven (asynchronous) architecture. This architecture uses small, but more importantly, predictable amounts of memory under load.
The PHP-FPM (FastCGI Process Manager) is usually used to allow Nginx to process PHP files. Nowadays, PHP-FPM is bundled with any Uni