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I'm a technical evangelist, international conference speaker, published author, blogger, and vlogger.
Hi, I’m Thijs!
More about me
Upcoming presentations
I speak at conferences, meetups, and corporate events about technology. I talk about code, infrastructure, automation, and web performance.
View upcoming presentationsBlog
I blog about technology, conferences, and other aspects of my career. Recurring themes: Varnish, PHP, ElasticSearch, Redis, containers, and my vlog.
Read my blogVarnish book
I wrote Getting Started with Varnish Cache, a book about reverse caching proxy technology that speeds up your website. It's published by O'Reilly.
Buy my bookAbout me
I'm a technical evangelist at Varnish Software, the company behind the Varnish Cache open source technology. My mission is to bridge the gap between code and infrastructure. I convey my message through various media: I speak at conferences, I write blog posts, I record vlogs, I write books, and I love interacting with people.
As an international conference speaker, I've presented 306 talks in 22 countries.
I'm the author of "Getting Started with Varnish cache", an O'Reilly book about Varnish.





Upcoming presentations
Varnish Internal Conference 2023 Inspire & challenge
SRECon 23 EMEA 2023 HTTP Headers that Make Your Website Go Faster
Guest lecture 2023 Caching with Varnish: from web acceleration to content delivery
devops.barcelona 2023 Distributed load testing with k6
EBU Horizons 2023 The importance of caching & edge logic in the 5G emerge project
Featured presentation videos
Getting Started with Varnish Cache
I'm the author of "Getting Started with Varnish Cache", an O'Reilly book about the Varnish caching technology.
Varnish is a so-called reverse caching proxy that acts as an intermediary between the browser and the webserver. Varnish stores HTTP responses and serves them to the browser, without accessing the backend for every request. This causes a massive speed increase.
My book explains how you can get the most out of the software, by tuning either your Varnish configuration, or by optimizing your web application.



Blog


Airtame product review
- By ThijsFeryn
- In Review, Tech, Vlog
- 9th October 2018

PHPBenelux Conference 2018 behind the scenes – VLOG 10
- By ThijsFeryn
- In Travel, Trip report, Vlog
- 31st January 2018