Can you believe Java API's can fool you sometimes?

Recently I run into an issue with streaming large files (specifically PDF files) from WebSphere application server (version 5.x and 6.x). I have a servlet that reads a large file (300 MB) from Application server and stream the bytes to the browser. naturally i have used a buffered output stream and used a buffer size as 1024 bytes. and every time 1024 bytes is written to the servlet output stream i used the "flush" API to clear the buffer and thinking it may send the bytes immediately to the browser. But unfortunately I have observed a strange error! can you guess what could be that?

Cloud Computing Providers & Existing Infrastructure - Thoughts

I have attended the Recent Business Technology Summit on Cloud Computing held at Indian Institute of Science (IISc) Bangalore and got a chance to attend a session with Amazon Web Services team. The most interesting feature attracted me is the concept of "elastic IP". I wanted to share my thoughts on a practical situation that may come up when enterprises adopt to the cloud computing world.

OpenSSO and Liferay Integration - Life is not easier

Summary
Recently I tried to integrate Liferay 5.1.2 with OpenSSO Enterprise 8.0 but I was unlucky to complete it. The Liferay documentation explains a very simple steps to do the integration and is very easy to do. But when I run the Liferay server first time I got NullPointerException, then I figured out it was URL connection issue, I fixed it using a proxy server but then I got
ArrayIndexOutOfBoundsException, I am still debugging to find out the cause for this error.

WebSphere Portal V4.x, 5.x, 6.x Home Page Design Flow!

Recently I noticed a design flow in WebSphere Portal that may leads to performance issue for portal pages. At first glance it looks harmless but when looked closely it revealed as a trojen horse. Ok no more suspense here it is.

Smart SOA

Based on their experience on more than 1000 implementations, IBM has come up with a set of "guidelines and priciples" for the SOA implementation approach called Smart SOA.The goal of "Smart SOA" is to maximize both the business and IT value by applying principles of simplicity and robustness in every stages of SOA implementation.