The business application fortress design is critical to your overall enterprise architecture.
Business application fortresses are built on components and component-oriented middleware (COMWare).
The main benefits of COMWare are automatic transaction boundary management and fortress wall reinforcements through role-based security.
The automatic transaction boundary management algorithms lead to the golden rule: Component-level methods should be self-contained transactions.
The golden rule implies that state should be read in and flushed out within the method.
Components following the golden rule and managing their state correctly will be amenable to high levels of reliability and scale-out scalability through the use of loosely coupled clusters.
Be careful to distinguish between object-level methods and component-level methods.
Avoid putting unnecessary workload in the form of stored procedures in the database.
Use .NET where low cost is important.
Use .NET where support for non-Java-like languages is important.
Use J2EE where support for official Java is important.
Use J2EE technologies where non-Windows platform support is important.
