Typical bugs in technical architecture of Java based services

There is a joke. A fireman is complaining, “What the hell, each and every time people call us to say that their house is on fire”. As a solution architect in DataArt, I can say that 80% of my job is to help different companies to solve problems with their systems. So, when I see a project, it is usually “on fire”. Sometimes problems lie with requirements, sometimes with management, sometimes they are caused by a wrong choice of tools. But lots of problems lie with the technical architecture. I want to discuss with you several most typical problems in the technical architecture that I have seen in more than half of the projects.Slides