Daniel Schneller works as a software developer, database administrator, and general IT professional for an independent software vendor in the retail sector. After successfully graduating from the University of Cooperative Education in Heidenheim, Germany with a degree in Business Computer Science, he started his career as a professional software developer, focused on the Microsoft technology stack. In 2002 he started focusing on enterprise-level Java development and has since gained extensive knowledge and experience implementing large scale systems based on Java EE and relational databases, especially MySQL since version 4.0. Currently he is mostly involved with the ongoing development of framework-level functionality, including customization and extension of an ORM-based persistence layer. He is involved in different open source projects such as FindBugs, Eclipse, and Checkstyle and infrequently blogs about Java, MySQL, Windows, Linux and other insanities at http://www.danielschneller.com. Udo Schwedt is head of the Java architecture team and deputy head of the Java development department at the IT service provider for Germany's market leader in the Do-It-Yourself sector. After finishing his studies at RWTH Aachen, Germany with a degree in Computer Science, he started his career as a professional Java developer in a leading software company in the banking sector. In 2003, he joined his current company as a framework developer, subsequently taking the role of a lead architect. Both authors are involved in a large scale international software project, which encompasses development of a Java-based merchandise management software solution. This decentralized multi-platform environment is based on more than 500 decentralized MySQL server instances with more than 5,500 replication slaves. Daniel and Udo are responsible for configuration and management of this infrastructure.