Varnish is an HTTP accelerator and reverse proxy server that caches web content in memory to dramatically improve website performance and reduce server load. It sits between clients and web servers, serving cached content when possible to deliver fast response times for high-traffic websites.
Categories: Cache tool, Reverse proxy
Official website: https://varnish-cache.org
Varnish is ranked #1 of 127 in Cache tool by website adoption.
WhatStack detects Varnish by analyzing HTTP headers, HTML source code, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries using signature-based pattern matching across 10 different analyzers.