GVB Subrahmanyam

Java is hot. Just nine years old, it has become one of the leading development environments in the world. Millions of programmers and thousands of companies use it, and half of all IT managers expect to deploy J2EE applications this year. But Java's popularity hasn't necessarily made it easy for the growing population of Java code jockeys. Ever-shortening production cycles have kept the heat on programmers, who increasingly work in large teams to meet production milestones. And every day those teams come face-to-face with an immutable law of software development: the more code you write, the more bugs you'll get - bugs that cost time and sap quality and performance from applications. This article looks at performance tuning and optimization of memory usage of a J2EE a... (more)

Reference Architecture for Securing Web Services in a Heterogeneous Environment

Web Services have played a key role in integrating heterogeneous applications, particularly in cross domains. As part of identity management, Security Token Services are used for request and response tokens. However, we need multiple communication channels among Security Token Services when multiple applications in different domains try to reach other Web Services. In this article we have... (more)

Developing a CICS-Based Web Service

Web services have opened opportunities to integrate the applications at an enterprise level irrespective of the technology they have been implemented in. IBM's CICS transaction server for z/OS v3.1 can support web services. It can help expose existing applications as web services or develop new functionality to invoke web services. One of the commonly used protocols for CICS web services ... (more)

Migrating from WebLogic 6.1 to 8.1

BEA's name is synonymous with the application server. Most applications running on Unix in North America run on BEA's WebLogic server, particularly financial apps. The current stable WebLogic 8.1 version does a lot more than earlier versions. Migrating to new versions is always challenging and risky, but is done for efficiency and new capabilities, and to stay current with a vendor's pro... (more)