logging container-managed datasource jdbc with log4jdbc

In my new 'old' project which I just inherited there is - once more - Hibernate and plain JDBC access to a database, happily mixed. Hibernate logs SQL nicely, but that leaves out whatever datbase access the rest of the application is performing. I found log4jdbc very convenient which allows fain-grained logging over every interaction … Continue reading logging container-managed datasource jdbc with log4jdbc →

JPA and postgres transaction isolation

The short story: the default Postgres transaction isolation level can lead to trouble in a web application. I'm showing here a way to change it in a Spring/JPA application. The long story: One of the applications I worked recently on consists of a rich client which issues an HTTP request for every little thing it … Continue reading JPA and postgres transaction isolation →

Replacing social sharing buttons with javascript-less alternatives

Social sharing widgets slow down page loading For every public facing site there comes the moment where its content has to be shared in social media. We all know the dreaded "Like" or "Tweet" buttons on many sites or blogs. They not only compete for the reader's attention but also for screen real estate and … Continue reading Replacing social sharing buttons with javascript-less alternatives →

Eclipse/SVN keeps asking for keystore password on a mac

For my current project I'm working on a Mac and Eclipse kept asking for the OS keystore password every time SVN was accessed. The eclipse error log says: "StorageException: No password provided." While I am sure that there are proper solutions to this problem, relaxing a constraint in the OS keystore did the job for … Continue reading Eclipse/SVN keeps asking for keystore password on a mac →

On URL accuracy, versioning and the immutable-redirect pattern

So you have this requirements: serve content (might be a static file or a dynamic page) under a URL make it cacheable by defining appropriate HTTP expiration headers yet, the content might change - serve it under a new URL the old URLs should still be valid but show the new content In my current … Continue reading On URL accuracy, versioning and the immutable-redirect pattern →