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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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Android Full App, Part 8: Creating an AppWidget for the home screen

This is the eight part of the “Android Full Application Tutorial” series. The complete application aims to provide an easy way of performing movies/actors searching over the internet. In the first part of the series (“Main Activity UI”), we created the Eclipse project and set up a basic interface for the main activity of the application. In the second part ...

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Java Code Geeks on Facebook

Hello fellow Java developers! We are pleased to announce that our blog enriched with Facebook presence. You can find our Facebook page here From Java developers to Java developers, help develop the largest Java Geeks community today! Best Regards Justin

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Dependency Injection – The manual way

spring-interview-questions-answers

Dependency injection is a technique that separates behavior from dependency resolution. In simpler words, it allows the developer to define classes with specific functionality that depends on various collaborators, without having to define how reference to these collaborator will be obtained. In that way, decoupling among the various components is achieved and cleaner code is introduced in general. More specifically, ...

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Securing GWT apps with Spring Security

In this tutorial we will see how to integrate GWT with Spring’s security module, i.e. Spring Security. We will see how to protect the GWT entrypoint, how to retrieve the user’s credentials and how to log the various authentication events. Moreover, we are going to implement a custom authentication provider so that existing authentication schemes can be reused. If you ...

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Things Every Programmer Should Know

At ui-programming, one of our JCG program participant sites, articles about “Things Every Programmer Should Know” are occasionally posted. As stated in the author’s first post, the 97 Things Every Programmer Should Know project, pearls of wisdom for programmers collected from leading practitioners. The collection is intended simply to contain multiple and varied perspectives on what it is that contributors ...

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Android 2.3 is out – Get ready for Gingerbread

Google has just released the new Android 2.3 version, code name Gingerbread. As with every new release, this one was well expected and includes a bunch of additions, improvements and new features. Let’s explore what new features are offered both from an end user’s and a developer’s perspective. As stated in the official Android Developer’s Blog post, among the new ...

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