Nothing but Java EE

Hibernate, Ehcache & JGroups

2011-01-29T12:28:00.000-08:00

In this post I try to explain my experience on Hibernate L2 cache replication implementation. Hibernate Cache As we all know, there are two types of cache available in Hibernate. 1st Level Cache - Hibernate Session 2nd Level Cache(L2) - SessionFactory along with the external cache providers * From here on i refer 2nd Level cache as L2 cache L2 Cache L2 cache can store Entities, Collections,

My fav iOS4 apps

2010-07-25T00:53:00.000-07:00

Recently i bought an iPod touch 3G. The interface is amazing. Also i have upgraded my iPod to 'iOS4'. That is even great!!. Thanks to Apple's new policy related to free upgrade of OS even for iPods.I find Multitasking, folder and playlist creation are more useful in iOS4.Another great thing is iOS4 apps. There are so many to download. Here is my app list,Games:=====Music:-------DigiLite -

Cashing in on Caching...

2010-06-30T00:22:00.000-07:00

Here are the very recent developments in Caching...The reason behind this new development is 'Clouds'. Why caching?"It is often used to speed up dynamic database-driven websites by caching data and objects in RAM to reduce the number of times an external data source must be read"Then Why RDBMS?If we reduce no. of db calls then why do we need complex rdbms.?simple key-value store is more than

Performance analysis

2009-07-20T10:29:00.000-07:00

We have been working on analyzing the performance of our Spring+Hibernate based web application since march. The task is to mainly identify the 'bottle necks' & other hot spots.Functional Problems: Less throughput - <> Memory leak - Heap memory is not getting released, it leads to frequent application server restart Less capacity, There is a Excel reading part, it is now restricted to 20MB(approx

Hibernate leaves Lazy enabled objects in ThreadLocal

2009-05-11T08:59:00.000-07:00

After a long monitoring activity we found that some of our objects which are huge in size, left in the Heap. Due to this frequent restart of our production server has become our routine task.The profiler output shows that the objects resides in the ThreadLocal map. All of them are Lazy enabled Hibernate Entity objects.After Googling we come to know that there is a serious bug in Hibernate CGLib

Aspect Oriented Programming in my way..

2009-03-15T09:45:00.000-07:00

Here is my simple presentation about 'AOP in spring way'. I presented this in our account level Technical event. This is my second contribution for this event, first was about 'Multipurpose Template engines' (Feb 2008).I explained a bit about AOP concepts & how spring manages transaction using aop.My conclusion is 'Think in terms of AOP not in terms of AOP frameworks'. Our main concern should be

Eclipse Mylyn & Trac

2008-12-01T23:20:00.000-08:00

For the past 2 weeks I have been using Trac (Project management tool) inside the eclipse. It seems good. There are some useful feature which we can adapt, those might ease up our development process. There are terms like Activate & deactivate tasks, Context, Schedule etc. * Context holds a collection of modified files for a particular task. * When we work on multiple tasks it is very easy for us

Great moments..!!

2008-10-15T23:10:00.000-07:00

Can't forget the day 14/10/2008 . I Won 'GEM (Great Ericsson Minds) - 2008' award for 'Technical excellence' in my project. A confidence booster, which also makes me more responsible & sincere to my project.

First anniversary

2008-09-29T23:36:00.000-07:00

First anniversary for my Blog.Really a long journey for me... :). Because i am not a Martin fowler(http://martinfowler.com/bliki/) :) . The driving force is, the kind of technical problems i am facing in my work life. Expecting more to come in future, so that i continue my journey...

CSS hack : Conditional comments - IE

2008-09-29T00:02:00.000-07:00

Conditional comments only work in Explorer on Windows, and are thus excellently suited to give special instructions meant only for Explorer on Windows. They are supported from Explorer 5 onwards, and it is even possible to distinguish between 5.0, 5.5 and 6.0.So, the following HTML fragment is possible .