Marlabs Official Blog

Need for Performance Requirements to Ensure Reliable Business Applications Friday, May 17, 2013

Applications developed for various domain verticals like BFS, Insurance, Healthcare, e-Learning, etc. have a huge volume of transactions in a day. While there is sufficient focus and due-diligence in the industry to define the functional requirements, the absence of proper non-functional requirements in many instances can lead to failure of applications and adverse business impact. Hence, performance requirements gathering play a very important role in the software development life cycle.

Ramesh Viswanathan, Senior Performance Test Architect at Marlabs highlights the importance of defining and collecting requirements which is usually given secondary importance compared to functional requirements.

Read full article or download the article: Need for Performance Requirements to Ensure Reliable Business Applications

A Customized Approach to Test Process Improvements Friday, May 17, 2013

Quite a few IT organizations go through the experience of Test Process improvements. The experience and successful outcome of these initiatives has been mixed. Like in any other transformation exercise, success is dependent among other things-on the alignment of improvement Goals, Nature of organization, Organization Strategy, Domain & Technology context, measurements and Executive support. While it is important to use standard proven frameworks for Test Process assessment and improvements, it is equally important to customize and extend the framework based on the contextual situation and ensure it’s alignment to the factors mentioned above.

Rajesh Sundararajan, Practice Head-Testing services at Marlabs highlights the key aspects of Test Process Improvement and analyzes their context driven variations in different situations.

Read full article or download the article: A customized approach to Test Process Improvements

Tags: Marlabs, Marlabs Testing, Test Process Improvement, Testing Services
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Quick Look Back on Java EE 7 and Beyond Friday, May 17, 2013

With HTML5 gaining lot of momentum in the market Java EE 7 is themed after HTML5 and boost in productivity. Java EE 7 features were focused on WebSocket, JSON support, Batch processing, Concurrency utilities, JAX-RS 2.0 and JMS 2.0.

High Productivity
Lot of dependency injection introduced in the platform which means a lesser boilerplate code, thanks to Spring who introduced dependency injection concept which is incorporated by Oracle in Java EE7. Provides more defaults in the platform like default datasource, jms connection factory etc this helps in creating quick POC’s without worrying about what values needs to be passed.

WebSocket
Enables duplex bi directional communication over a single TCP channel. Typically when we do a http request it is 2 step process; establish a new TCP connection and then http connection. This will make more heavier since the headers will ride on the these protocols. In websocket there is a connection established and there can be as many data which can be sent and the overhead is only once.

JSon Processing
Java api for processing json is built on top of JAXB. Json processing provides streaming api and object model. Selection criteria between streaming api and object model is based on the trade of between the performance and memory.

Bean Validator
Typically POJO’s which gets persisted via a jpa persist mechanism to the database didn’t have a mechanism to validate the attributes of the bean. This cost a heavier mechanism of database which throws exception and then propagate this to user interface. Bean validator provides a mechanism to validate the beans and this is annotation driven.

Image Courtesy: Oracle

What to look for in Java EE 8

The main focus on EE 8 release is on cloud and defining standards based on cloud programming model. It makes a great sense since the world is excited towards cloud and support in Java EE 8 is vital.

Other highlights of the Java EE8 :

Cloud
JCache
Multitenancy
Paas Enablement
NoSQL
Thin Server Architecture
Modularity
JSON B

Author : Manigandan Mani Srinivasan – Head, Java Practice, Marlabs Bangalore

Tags: java, Java EE 7 Features, Java Enterprise Edition, Marlabs
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