Among its services, the Sylphe Project hosts miscellaneous websites which aims vary. Please note that on the project, website can range from a simple temporary download interface to more refined services such as a Wordpress instance or an OwnCloud server.
In order to experiment different webservers, production is split between nginx and Apache. Right now (Jan. 2016), no cache or clustering mechanism have been setup.
We've been offering HTTPS on Sylphe hosted websites thanks to Let's Encrypt since December 2015.