Varnish¶

Varnish Concepts¶

Varnish Basics Docs

Varnish Built-In Functions & Keywords

Installing Varnish¶

1. Install the package¶

sudo yum -y install varnish
sudo systemctl enable varnish - To enable varnish to start on reboot
varnishd -V - Check version & installed correctly

2. Installing Magento Module¶

Switch to a new branch for the installation and download the relevant platform module.

3. Add Parameters on Daemon¶

Edit varnish daemon parameters - vim /etc/varnish/varnish.params

DAEMON_OPTS="-p feature=+esi_ignore_other_elements -p cli_buffer=16384 -p vcc_allow_inline_c=on"

Magento 1 Turpentine Fix

4. Lastly edit your Web Server (Apache/Nginx) configuration to use varnish.¶

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Varnish Logging¶

varnishlog - Varnish Log, is grepable so you can use commands like varnishlog | grep Mobile (will show user-agents with mobile in name)
varnishhist - Varnish history will show a bar like graph using | for hit varnish pages and # for missed cached hits.
Useful Varnish 4 Top and Log Commands

The full varnish log will give you an indication on what is happening at different stages. Cross-reference this with the vcl file you are using with varnish.

For Example:

- VCL_call HIT Anything after this line until the next VCL_call will relate to the subroutine vcl_hit.

Varnish GEO IP¶

Medium Article with Varnish 3.0 and Magento 1