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Apache Mesos : Writing your own distributed frameworks

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In the previous post, we saw what mesos is, how is it useful and getting started with it. In this post, we shall see how to write your own framework on mesos. (In mesos, a framework is any application running on it.) This post explains about a framework called “mesos-pinspider” which fetches the user profile information and user board information ...

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How To Process Java Annotations

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One of the cool new features of Java 8 is the support for lambda expressions. Lambda expressions lean heavily on the FunctionalInterface annotation. In this post, we’ll look at annotations and how to process them so you can implement your own cool features. Annotations Annotations were added in Java 5. The Java language comes with some predefined annotations, but you ...

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How to Be Honest and Keep a Customer

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Most of our clients are rather surprised when we explain to them that they will have full access to the source code from the first day of the project. We let them see everything that is happening in the project, including the Git repository, bug reports, discussions between programmers, continuous integration fails, etc. They often tell me that other software ...

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Notes: Microservices by Martin Fowler

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I just watched Martin Fowler’s talk about Microservices at XConf. Here are some of my notes and related thoughts. The talk is heavily based upon Martin Fowler and James Lewis’ article about Microservices, so you can find and read most of the information there. Characteristics of Microservices In his article, Fowler defines some characteristics that most of the already existing ...

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Using Netflix Hystrix annotations with Spring

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I can’t think of a better way to describe a specific feature of Netflix Hystrix library than by quoting from its home page: Latency and Fault Tolerance by: Stop cascading failures. Fallbacks and graceful degradation. Fail fast and rapid recovery. Thread and semaphore isolation with circuit breakers. I saw a sample demonstrated by Josh Long(@starbuxman) which makes use of Hystrix ...

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How to perform client side web performance testing in JMeter?

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In this article we will see how can we do client side performance testing using Jmeter Plugins. I will be using jmeter webdriver plugins. Before starting this topic, please have some basic information on client side performance testing from my previous post. So, lets get started:         Installation Install Jmeter and Plug ins from below links following ...

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Dependency injection pitfalls in Spring

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There are three injection variants in Spring framework: Setter-based injection Constructor-based injection Field-based injection Each of those mechanisms has advantages and disadvantages and there is not only one right approach. For example field injection:      

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Extending PrimeFaces CSV with Bean Validation

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Some of you already know that me and my co-author Mert Çalışkan are working on the 2. edition of the PrimeFaces Cookbook. The Packt Publishing allowed me to publish a small excerpt from one recipe of the new chapter “Client Side Validation”. It would help in letting the readers know about the book’s content. In this blog post, I would ...

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The IDE of choice for UltraESB – IntelliJ IDEA

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At AdroitLogic we have been using IntelliJ IDEA from a long time for development. It is found to be the best IDE for Java and related languages/technologies (it may be the choice for many other languages too, but my experience is mainly for Java and related technologies). The integration of Groovy and Grails of IDEA is awesome. The Data Source ...

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