Wil je meer weten over Varnish? Varnish zelf heeft een boek op Github staan die intussen vrij uitgebreid is.
Varnish is a reverse HTTP proxy, sometimes referred to as a HTTP accelerator or a web accelerator. A reverse proxy is a proxy server that appears to clients as an ordinary server. Varnish stores files or fragments of files in memory, allowing them to be served quickly. It is essentially a key/value store, that usually uses the URL as a key. It is designed for modern hardware, modern operating systems and modern work loads.