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Enterprise Java

Cajo, the easiest way to accomplish distributed computing in Java

java-interview-questions-answers

Derived from the introductory section of Jonas Boner’s article “Distributed Computing Made Easy” posted on TheServerSide.com on May 1st 2006 : “Distributed computing is becoming increasingly important in the world of enterprise application development. Today, developers continuously need to address questions like: How do you enhance scalability by scaling the application beyond a single node? How can you guarantee high-availability, ...

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Aspect Oriented Programming with Spring AOP

spring-interview-questions-answers

Aspect Oriented Programming (AOP) refers to the programming paradigm which isolates secondary or supporting functions from the main program’s business logic. AOP is a promising technology for separating crosscutting concerns, something usually hard to do in object-oriented programming. The application’s modularity is increased in that way and its maintenance becomes significantly easier. The most prominent example of a crosscutting concern ...

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Spring configuration with zero XML

spring-interview-questions-answers

Tomasz Nurkiewicz, one of our JCG partners and avid supporter of the Spring framework, describes in his latest post how to configure a Spring application without using XML. The annotation approach over the top. Check out his tutorial: Spring framework without XML… At all!

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Advanced SmartGWT Tutorial, Part 2

This is the second part of my tutorial regarding rapid UI development with SmartGWT. In the first part of the tutorial, we created the basic interface layout and added some basic components. It is now time to take it up a notch and use the real power of SmartGWT. Before we proceed, let’s remember how the UI we have created ...

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Advanced SmartGWT Tutorial, Part 1

Justin, Pat and I have started working on a side project that requires a user interface for administration and management. After working for a while with SmartGWT and GWT in general, we decided to create the interface using SmartGWT. We really liked the visual components (check out the SmartGWT showcase) and the fact that it facilitates rapid development. In this ...

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Cassandra vs MongoDB vs CouchDB vs Redis vs Riak vs HBase comparison

Kristóf Kovács performed a very interesting brief comparison among six of the most popular “NoSQL” database implementations. Additionally to Kristóf’s work, I would like to provide some links which I believe will help all of you who are interested in following the “NoSQL” community along : NoSQLDatabases – http://www.nosqldatabases.com/ myNoSQL – http://nosql.mypopescu.com/ NoSQL – http://nosql-database.org/ Best Regards Justin

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How to Do 100K TPS at Less than 1ms Latency

java-interview-questions-answers

Martin Thompson and Michael Barker talk about building a HPC financial system handling over 100K TPS at less than 1ms latency by having a new approach to infrastructure and software. Some of the tips include: Understand the platform Model the domain Create a clear separation of concerns Choose data structures wisely Run business logic on a single thread The presentation that ...

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Revving Up Your Hibernate Engine

Want to know how you can tune up your Hibernate-based applications for seamless scalability and maximum performance results? This article explores tuning techniques for Hibernate-based applications, focusing on tuning topics that are effective but poorly documented, such as inheritance mapping, second level cache and enhanced sequence identifier generators. It also provides some background database information which is essential for tuning Hibernate. A ...

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