This guide explains how to install Varnish Cache 6.0 with Apache on CentOS 7. Varnish Cache is an open-source caching HTTP reverse proxy that can help improve a web server's performance. This tutorial uses CentOS 7 without SELinux. If you need to disable SELinux, see our article "[How to Disable SELinux on CentOS](https://docs.vultr.com/disabling-selinux-on-centos-7)". * A [fully-updated](https://docs.vultr.com/how-to-update-a-vultr-cloud-server#how-to-update-almalinux-centos-rocky-linux-and-vzl......