Varnish is an open source "web accelerator" which you can use to speed up your website. It can cache certain static elements, such as images or javascript but you can also use it for other purposes such as Load balancing or some additional security, in general most of the people want to try it and test their website to see if it's really so amazing (IMO yes, but test it yourself). The traditional guides will tell you to move your webserver to another port, perhaps 81,8080 or just bind to localho More

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