How to Install MCP Servers in Claude Code
July 13, 2025
Claude Code now supports MCP (Model Context Protocol) servers, which allow Claude to interact with external tools and services. This article shows you how to install an MCP server using the playwright server as an example.
A Guide to OpenAPI Code Generation for TypeScript
May 30, 2021
Generate REST client code in TypeScript from an OpenAPI specification.
More...The Simple Way to Customize Ant Design in React-Scripts
May 9, 2021
How to customize an Ant Design Theme in react-scripts - easily and without ejecting.
More...Guard Bundler Tutorial - Run "bundle install" Automatically
August 2, 2015
Here I explain how to setup Guard to run 'bundle install' automatically everytime you modify your Gemfile.
More...Guard Tutorial - Run a Command on File Change
July 27, 2015
Guard watches the files in your project directory, and responds to changes by running a configurable command or plugin. This is very useful functionality. I feel that the Guard website makes it harder than necessary to get started though. Therefore I wrote this tutorial.
More...Redis: Crystal vs Ruby vs Node vs ...
May 26, 2015
Recently, I have published a Redis client library for Crystal called Crystal-Redis.
More...A Redis Client for Crystal
May 21, 2015
This week I have published Crystal-Redis, a Redis client for the Crystal programming language. It is open source, full featured, well documented and is very fast.
More...Using SPDY with Nginx 1.4
April 26, 2013
Nginx 1.4 finally went stable. This new version comes with SPDY integrated. If both web browser and server support it, SPDY improves your site's performance.
More...Sphinx search / thinking_sphinx with german umlauts
April 17, 2012
I figured out how to get Sphinx / thinking_sphinx to handle searches with german umlauts and treat the umlauts as case insensitive.
More...Fix for bundle install: ArgumentError: invalid byte sequence in US-ASCII
March 20, 2012
I stumbled across a weird issue with bundler on MacOS X:
More...Creating smaller images in Rmagick
November 15, 2011
When you create an image in Rmagick and save it, chances are high that your image will be way too big. The reason is that, by default, Rmagick creates uncompressed images.
More...Printing the page content in Capybara
December 2, 2010
Capybara is a great integration testing framework that easily replaces Webrat. Plus, it works with Rails 3, which Webrat seems not to do. If you need to print the current page's content, for example to debug your test, you can do so with:
More...Ruby on Rails: Fix for 'invalid multibyte char (US-ASCII)'
August 31, 2010
You probably got this error message in Ruby on Rails: 'invalid multibyte char (US-ASCII)'
More...Rails Plugin for Single Sign On with Atlassian Crowd
July 27, 2010
Atlassian Crowd offers a simple solution for single sign on. It comes with an authentication server, a web based administration console and Java client libraries. Other Atlassian products such as Jira, Confluence and Bamboo integrate with Crowd. With the crowd_rails plugin, Ruby on Rails can also benefit from single sign on with Atlassian Crowd 2.0.
More...Version 0.5.10 of Crowd Gem Released
July 26, 2010
The new version 0.5.10 of the crowd-stefanwille fixes a bug in handling of validation factors.
More...Ruby Gem for Crowd 2
July 19, 2010
I took the Ruby client gem for Atlassian Crowd 1.6 and updated it for Crowd 2.
More...Why 'bundle install' is slow (and how to make it fast)
July 12, 2010
I use Bundler's command `bundle install` with Capistrano and it used to takes many seconds to complete. The reason was that Bundler fetched all required gems unless they were already installed and then checked for all dependent gems if there is are newer versions available and installed these. It's the last step that took so long.
More...Why You Should Split Your Epics Into Smaller User Stories
April 6, 2010
Probably every agile book recommends to split large user stories (epics) into smaller ones. But why? The reason is usually 'because they are more manageable', but I didn't really understand what that was supposed to mean. Until recently, when we worked on two epics. And I had an insight that I am eager to share.
More...Let Business People Get Their Statistics Themselves
January 13, 2010
I found that, once you have software in production, your business people ask for numbers, statistics and reports from your database, on a weekly or monthly basis. And this keeps interrupting your workflow. And it also keeps you from coding. So what to do?
More...Looking for Ruby on Rails Developer for Balao in Hamburg
October 28, 2009
I am searching for a new colleague: A sharp, experienced Ruby on Rails developer for our internet startup Balao in Hamburg.
More...Spring & Hibernate on Google Books
September 10, 2009
Google Books has scanned my book Spring & Hibernate:
More...BizSphere Explained
May 7, 2009
SVA BizSphere GmbH has a great page up that describes its product BizSphere, the software that I worked on over the past 2.5 years.
More...Content Landscape
April 5, 2009
Here is a description of Content Landscape, a project for which I did architecture and specification work during my BizSphere engagement.
More...Spring & Hibernate, 2nd Edition
February 24, 2008
Our publisher will start selling the second edition of our book _Spring & Hibernate_ in April, 2008.
More...Scrum Master Certification
December 14, 2006
On November 23, 2006 I became a Certified Scrum Master (CSM).
More...Talk about Hibernate at Lehmann's Book Shop
November 12, 2006
On October 26, I spoke about Hibernate at Lehmann's book shop in Hamburg.
More...Book 'Go To JavaServer Pages'
June 27, 2006
A few years ago, I wrote a book called 'Go To JavaServer Pages'. It was published by Addison Wesley in 2001.
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