Varnish GeoIP


by Danila Vershinin, January 5, 2019

Varnish can be extended with more features by loading extra VMODs. GeoIP? There are VMODs for that, too.

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Tuning proxy_buffer_size in NGINX


by Danila Vershinin, July 7, 2018

Make your NGINX more memory efficient and fix that “upstream sent too big header while reading response header from upstream” error.

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Varnish incompatible software


by Danila Vershinin, April 20, 2018

Listing all the scripts and apps which don’t play well with Varnish. And the reasons why. WordPress plugins Easy Digital Downloads Sets PHPSESSID cookie on every page: session_start(); in includes/class-edd-session.php

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Implementing grace mode in Varnish 5.2


by Danila Vershinin, February 6, 2018

Here’s how you can implement Varnish grace mode with Varnish 5.2 and have it work for purged objects too.

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Confirming Varnish cache status for a page


by Danila Vershinin, January 20, 2018

Easily check whether a particular page was cached with Varnish.

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Varnish – cache on cookies


by Danila Vershinin, May 30, 2017

Cache those logged in pages with Varnish!

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Varnish as Web Application Firewall


by Danila Vershinin, May 16, 2017

Protect your web application using.. simple Varnish VCL coding.

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How to cache things longer on Varnish than on the client


by Danila Vershinin, May 9, 2017

How to cache things longer on Varnish than on the client. Possible solutions

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ServerPilot


by Danila Vershinin, April 12, 2017

Don’t use ServerPilot. They are scamming you. Here is how and why!

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Varnish Default TTL


by Danila Vershinin, April 2, 2017

What is Varnish default TTL and how to set it to a correct value

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