Of Babylonian kings or why technical users in user stories are OK

Every time a technical system impersonates a human in a user story, God drowns a kitten in an agile waterfall.-- Unknown User stories are supposed to advocate the user's view on a system's behaviour. Whatever technical systems which interface with "our" system think or do does not interest us. But why then is it so … Continue reading Of Babylonian kings or why technical users in user stories are OK →

Java synchronized method concurrent execution

I read this puzzle years ago (unfortunately I can't find the reference) but didn't appreciate it at the time. Java synchronized methods [1] can supposedly be invoked only by a single thread at a time. The essence of aforementioned puzzle was that, if the synchronized method obtains a lock on the object the method belongs … Continue reading Java synchronized method concurrent execution →