Nginx is an open source web server, created with the primary goal of outperforming the Apache web server. First developed in 2002, Nginx can also be used as a reverse proxy, load balancer and HTTP cache. In terms of performance, out of the box and serving static files, Nginx can handle approximately four times more requests per second than Apache, whilst also using dramatically less memory. According to W3Techs, it is used by 57% of the world's top 10,000 websites. Nginx uses an asynchronous event-driven approach to handling requests, which provides more predictable performance under high loads and should be credited with it's increasing adoption.