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Disabling URL rewriting for the Googlebot

Http is a stateless protocol. To work around the problems caused by this, web applications have the concept of a session. When a user requests a webpage for the first time the user is assigned a unique 32 character string. This string can be send along in subsequent requests to indicate that these requests are […]

Test driven development for GWT UI code

Test driven development for GWT UI code

Is a test driven development (TDD) approach possible when creating a GUI using GWT? This post is about how to apply MVC (Model-View-Controller) to organize GWT UI code, with these objectives: a clear separation of the controller logic from presentation and model full testability of the controller logic independent of the (browser or hosted mode) […]

Too many open files

Today I was asked to review a piece of code that a coworker of mine suspected was causing “Too many open files“ exceptions in a production environment The code looked innocuous enough. He was using ProcessBuilder to create and run an external application. Regardless I booted into Linux and ran some tests. Now on Linux […]

Spring 2.5 and Maven problems

It looks like the spring 2.5 jars that where uploaded to the official maven repository are broken. The full spring jar is 321 kb large and only contains the spring aop classes. Anyway I added springs own repository to my pom and then i got the correct jar and sources <repository>   <id>spring</id>   <name>Spring Portfolio Repository</name> […]