Nginx or - engine-x - is a high-performance web server with low memory usage, created by Igor Sysoev in 2002. Nginx is not just a web server, it can be used as a reverse proxy for many protocols like HTTP, HTTPS, POP3, SMTP, and IMAP and as a load balancer and HTTP cache as well. In this tutorial, I will install and configure Nginx as a caching reverse proxy for an Apache web server on Ubuntu 15.10.
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