How To Install varnish on Debian 10

Learn how to install varnish on Debian 10 with this tutorial. varnish is state of the art, high-performance web accelerator

Introduction

In this tutorial we learn how to install varnish on Debian 10.

What is varnish

varnish is:

Varnish Cache is a state of the art web accelerator written with performance and flexibility in mind.

Varnish Cache stores web pages in memory so web servers don’t have to create the same web page over and over again. Varnish serves pages much faster than any application server; giving the website a significant speed up.

Some of the features include:

  • A modern design
  • VCL - a very flexible configuration language
  • Load balancing with health checking of backends
  • Partial support for ESI - Edge Side Includes
  • URL rewriting
  • Graceful handling of “dead” backends

There are three methods to install varnish on Debian 10. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install varnish Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install varnish using apt-get by running the following command:

sudo apt-get -y install varnish

Install varnish Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install varnish using apt by running the following command:

sudo apt -y install varnish

Install varnish Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install varnish using aptitude by running the following command:

sudo aptitude -y install varnish

How To Uninstall varnish on Debian 10

To uninstall only the varnish package we can use the following command:

sudo apt-get remove varnish

Uninstall varnish And Its Dependencies

To uninstall varnish and its dependencies that are no longer needed by Debian 10, we can use the command below:

sudo apt-get -y autoremove varnish

Remove varnish Configurations and Data

To remove varnish configuration and data from Debian 10 we can use the following command:

sudo apt-get -y purge varnish

Remove varnish configuration, data, and all of its dependencies

We can use the following command to remove varnish configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge varnish

Dependencies

varnish have the following dependencies:

References

Summary

In this tutorial we learn how to install varnish package on Debian 10 using different package management tools: apt, apt-get and aptitude.