If you have a website, it is crucial it loads up fast so users get a good experience. There is a small piece of software known ‘Varnish Cache’ which can help your side load faster by caching its content. Varnish Cache is an open source web application accelerator also known as HTTP accelerator or caching HTTP reverse proxy. Varnish Cache can dramatically improve the site performance and depending upon your system architecture can speedup your website performance by 80% or more.
Cisco Packet Tracer can be a very useful tool for learning about networking without needing to spend tons of money(infact, none). The simulator allows you to create a networking topology & then carry on your configurations & changes before they can be implemented in the real world networking environment. This is critical as you get to learn from any mistakes in simulation thus not needing your network to act as a guinea pig. Here, I’ll show you how you can install the Cisco Packet Tracer under your linux system. I would be installing it on Fedora 18.