Nitin Gaur

HTTP session management is a function offered by Java Enterprise Edition (JEE) application servers. It allows JEE applications to store state information about a given user across many HTTP requests. The JEE specification provides an API to store and retrieve information specific to the given user. WebSphere application servers and other competing products, provide session replication functionality. This is normally done either by writing to a database or through memory-to-memory replication technology.  These approaches while extensively used today, have operational challenges and cost implications. HTTP session replication enables for seamless session recovery, in event of an application failure, but we currently do not have a reliable, predictable and cost effective solution to handle session recovery in event of a data center failure. Until now we have discourag... (more)

Apache Hadoop and WebSphere eXtreme Scale

Hadoop Apache Hadoop is a software framework (platform) that enables a distributed manipulation of vast amount of data. Introduced in 2006, it is supported by Google, Yahoo!, and IBM, to name a few. At the heart of its design is the MapReduce implementation and HDFS (Hadoop Distributed File System), which was inspired by the MapReduce (introduced by a Google paper) and the Google File System. MapReduce MapReduce is a software framework introduced by Google that supports distributed computing on large data sets on clusters of computers (or nodes). It is the combination of two pro... (more)

Establishing a Mobile Center of Excellence (CoE)

I. Statement of Purpose The intent of this document is to capture the discussion and provide a prescriptive approach and consideration towards establishing a Mobile CoE. This document is also to serve as a Body of Knowledge (BoK) that includes agreed upon objectives, tasks and various other business and technology related topics in context of Mobile design. This document is just a draft on guidelines. The final charter of any CoE is task and responsibility of the core members of CoE. II. Intent of a CoE: Center of Excellence (CoE) is essentially a team of people that promote c... (more)

WebSphere eXtreme Scale Design and Performance Considerations

Fundamentals: How does WXS solve the Scalability problem? Understanding Scalability In understanding the scalability challenge addressed by WebSphere eXtreme Scale, let us first define and understand scalability. Wikipedia defines scalability as a "desirable property of a system, a network, or a process, which indicates its ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged. For example, it can refer to the capability of a system to increase total throughput under an increased load when resources (typically hardware) are added." Scalabil... (more)

Anatomy of Cloud Computing Platform

Introduction As the IT operations continue to evolve and transform the business towards agility and adaptability to ever changing rules of marketplace, the efficiency of any IT operation is of paramount significance. The phrase ‘time to market' has a completely new meaning in today's dynamic business environment where the only constant is change. This rapidly changing environment has lead the IT and business leaders alike to re-think the ‘procurement to provisioning' process with one goal in mind - Efficient use of resources. These resources include IT assets such as hardware an... (more)