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Software Development Metrics that Matter

As an industry we do a surprisingly poor job of measuring the work that we do and how well we do it. Outside of a relatively small number of organizations which bought into expensive heavyweight models like CMMI or TSP/PSP (which is all about measuring on a micro-level) or Six Sigma, most of us don’t measure enough, don’t measure the ...

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Google App Engine JAX-RS REST service

In this article you will learn how to create a REST service using JAX-RS reference implementation (Jersey) and deploy it on Google AppEngine. Prerequisites  For this tutorial you will need: a Google AppEngine account Eclipse Galileo (3.5.x) Google App Engine SDK for Java Install the Google Plugin for Eclipse as documented here (Check that you are using the release 1.3.1 ...

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JavaME: Google Static Maps API

Whether you need a map for your location based application or just for fun, you can use the easiest way ever: Google Static Maps API. In this post, we are going to see how you can get a Map as an Image from a latitude and longitude point. The latitude and longitude can be obtained using Location API which we ...

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Apache Shiro Part 1 – Basics

Apache Shiro, originally called JSecurity, is Java security framework. It was accepted and became Apache top level project in 2010. It aims to be powerful and easy to be used. The project is in active development with active both users and developers mailing lists. Most important areas are documented on its web page. However, it has lot of gaps in ...

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Backing Spring Integration routes with ActiveMQ

spring-interview-questions-answers

As discussed in my previous post, Spring Integration (SI) is a routing framework built on top of the Spring Framework that allows you to use proven enterprise integration patterns to solve system integration problems via messaging. Once you’ve gotten SI configured and working to perform your routing and mediation logic, you may find that you’d like to take the next ...

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Run Vaadin Apps in Intellij IDEA

In this article I’m going to show you how to run vaadin applications with Intellij IDEA. Vaadin provide some plugins for Eclipse and Netbeans. But for Intellij IDEA there are no plugins yet. But to deploy vaadin app is easier than other two IDEs. Here are the steps that you want to follow. 1. First Create a New Project , ...

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GC overhead limit exceeded – Java Heap analysis

This post is the continuation of our original GC overhead limit exceeded problem patterns post. Proper Java Heap analysis is critical in order to eliminate your OutOfMemoryError: GC overhead problem. If you are not familiar with this Java HotSpot 1.6 error, I recommend that you first review my First Article on this subject. This article will provide you with a ...

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MapReduce Questions and Answers Part 2

4 Inverting Indexing for Text Retrieval The chapter contains a lot of details about integer numbers encoding and compression. Since these topics are not directly about MapReduce, I made no questions about them. 4.4 Inverting Indexing: Revised Implementation Explain inverting index retrieval algorithm. You may assume that each document fits into the memory. Assume also then there is a huge ...

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