Resumen
Developing complex distributed applications can be an expensive and error-prone process. As a result, contemporary organizations are increasingly faced with a "distributed software crisis. The challenges of building distributed software stem from inherent and accidental complexities associated with distributed systems. While developing high-quality reusable software is hard enough, developing high-quality extensible and reusable distributed middle-ware framework software is even harder. Not surprisingly, many companies attempting to build reusable middleware frameworks fail often with enormous losses of money, time, and market share. We've noticed that the fear of failure often encourages companies to pin their hopes on silver bullets intended to slay the demons of distributed software complexity by using CASE tools or point-and-click wizards. To support the standardization effort, it is crucial for us to capture and document the patterns that underlie the successful distributed software components and frameworks that do exist.