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Content Negotiation in Spring Framework

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1. Introduction With what we had done with BeanNameViewResolver, is that we just had created multiple bean views in Spring context to generate the expected output. Spring soon introduced the Content Negotiation strategy, where we can use the traditional [email protected] HTTP message converters, to return desired outputs in JSON or XML, along with some flexibility and dynamicity it provides with the configuration. Often ...

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13 Decks Java Developers Must See to Stay Updated

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There are many key figures in the Java domain, each with his own perspective and opinions about the future of the language. While we can’t be at every event, meetup or talk, thanks to various slide sharing sites, we can hear what these influencers have to say. In the following post we’ve collected the best and most interesting decks about Java, ...

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The Changing Economics of Big Data

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Perhaps you’re old enough to remember when the library was the place we went to learn. We foraged through card catalogs, encyclopedias and the Reader’s Guide to Periodical Literature in hopes that we’d be able to understand what was going on in other people’s minds when they decided what went where. The process was time-consuming, frustrating and often futile. We ...

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Apache Spark Advanced Cluster Deploy Troubleshooting

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In this Apache Spark example tutorial, we’ll review a few options when your Scala Spark code does not deploy as anticipated.  For example, does your Spark driver program rely on a 3rd party jar only compatible with Scala 2.11, but your Spark Cluster is based on Scala 2.10?  Maybe your code relies on a newer version of a 3rd party jar ...

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Painless Containerized JBoss Generic Loan Processing on OpenShift

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We talked about the various layers from the bottom up, but have yet to provide you with any application development tooling beyond the Red Hat We have been discussing why application developers can’t ignore their stack anymore in the  App Dev Cloud Stack series. Container Development Kit (CDK). All you have so far is an easy to install project called the  Container Development ...

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Velocity is Not Acceleration

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I see a lot of confusion around velocity in new-to-agile teams. Too many people treat velocity as an acceleration measurement. That is, they expect velocity to increase to some large number, as a stable state. Velocity is a rate of change coupled with direction. When managers think they can measure a team with velocity, they confuse velocity with acceleration. As I enter ...

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Should you follow the rules?

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In the last article I wrote that I’m a big fan of tools for static analysis. Those tools help you follow established rules. To be more specific, they’re yelling at you through red builds whenever you break these rules. Isn’t it great? Before your code gets under the review, we are already sure that many things have already been checked and ...

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Publish Subscribe model in Kafka

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This is the fourth post in the series about integrating sync clients with async systems (1, 2, 3). Here we’ll try to understand how Kafka works in order to correctly leverage its publish-subscribe implementation. Kafka concepts According to the official documentation: Kafka is a distributed, partitioned, replicated commit log service. It provides the functionality of a messaging system, but with ...

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