Trainer - Lucas Dohmen

Training courses by Lucas Dohmen

Web Performance Hands-On Workshop

Identifying and understanding performance issues in web applications

from 600 €

Workshop

Next training events by Lucas Dohmen

Web Performance Hands-On Workshop

2025-12-08

Online with Lucas Dohmen

Technical information and books by Lucas Dohmen

Cheat Sheet: Web Performance

All important information on the topic of web performance is summarized in this cheat sheet.

You can find the cheat sheet as a PDF here.
DevOps and Unicorns

If you want to deliver software quickly and agilely, there’s no getting around DevOps. In this episode, Lucas and Anja talk about what DevOps is – and what it isn’t. According to Anja, there’s no such thing as a DevOps engineer who develops and operates software on their own – a real unicorn, in other words. But what is DevOps really? A conversation about organizational culture, trust, and autonomy—and the importance of platform, stream-aligned, and enabling teams. Listen to the podcast
Databases: Data models, scaling, cloud

Developers today have a wide range of options when it comes to choosing a database for their application. In this book, we discuss data models, scaling, and operation, with the aim of helping you make the right choice.
Cookies

“I accept cookies.” Each of us accepts them several times a day. But what exactly happens when we do? Stefan Bodewig, Lucas Dohmen and Till Schulte-Coerne discuss this in this episode. A key topic is: Why do we use cookies and how are they related to sessions? Lucas, Till and Stefan also shed light on how cookies are structured and how they work. In addition: How long do cookies last? Who actually determines this and where are they stored? Listen to the podcast
The Rails 8 Way

The Rails™ 8 Way is the comprehensive, authoritative reference guide for professionals delivering production-quality code using modern Ruby on Rails. It illuminates the entire Rails 7 API, its most powerful idioms, design approaches, and libraries. Building on the previous editions, this edition has been heavily refactored and updated.
Das technologische Rückgrat des Webs

Lucas Dohmen und Robert Glaser haben sich in dieser Folge einiges vorgenommen. Gemeinsam gehen sie der Frage nach: “Was passiert, wenn man im Browser Enter drückt?” und sprechen damit über nichts geringeres als das Rückgrat des World Wide Webs. Schritt für Schritt arbeiten sich die beiden durch die 3 Säulen des Webs – HTML, HTTP und URLs – bevor sie beim Kern des Pudels ankommen: dem statuslosen Request-Response-Zyklus mit Headern. Podcast anhören