lighttpd: A lightweight Apache alternative

The main difference between the two web servers is simple: Apache creates a separate process for each request, whereas lighttpd is able to process multiple requests inside one process. That’s why the latter uses less RAM, as well as less processor time. And that’s why lighttpd can be a better choice than Apache when your server has a small amount of RAM or has to handle large amounts of requests. The latter situation explains why lighttpd is used by popular websites such as Wikipedia and YouTube, and the former situation is why you could benefit from using lighttpd on your VPS to host your blog.