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1. JPA Mini Book

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Data as a Service: JBoss Data Virtualization and Hadoop powering your Big Data solutions

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Red Hat and Cloudera, announce the formation of a strategic alliance. From JBoss perspective, the key objective of the alliance is to leverage big data enterprise-wide and not let Hadoop become another data silo. Cloudera combined with Red Hat JBoss Data Virtualization integrates Hadoop with existing information sources including data warehouses, SQL and NoSQL databases, enterprise and cloud applications, and ...

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Beginner’s Guide to Hazelcast Part 4

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This is the fourth installment of my Hazelcast series. If one has not seen the other 3, I suggest one go to Part 1, Part 2 and Part 3. Logging Logging is an important feature of any application and my examples are no different. System.out.println can be a useful tool for telling the user what is going on in console applications. ...

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Beginner’s Guide to Hazelcast Part 3

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This is a continuation of a series of posts on how to use Hazelcast from a beginner’s point of view.  If you haven’t read the last two, I encourage reading them: Beginner’s Guide to Hazelcast Part 1 Beginner’s Guide to Hazelcast Part 2           The Primitives are Coming During my last post I mentioned to use ...

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Spring Boot and Spring Data REST – exposing repositories over REST

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Exposing Spring Data repositories over REST is pretty easy with Spring Boot and Spring Data REST. With minimal code one can create REST representations of JPA entities that follow the HATEOAS principle. I decided to re-use Spring PetClinic’s JPA entities (business layer) as the foundation for this article.       Application foundation The PetClinic’s model is relatively simple, but ...

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Stateless Spring Security Part 2: Stateless Authentication

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This second part of the Stateless Spring Security series is about exploring means of authentication in a stateless way. If you missed the first part about CSRF you can find it here. So when talking about Authentication, its all about having the client identify itself to the server in a verifiable manner. Typically this start with the server providing the client with a ...

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Akka Notes – ActorSystem (Configuration and Scheduling) – 4

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As we saw from our previous posts, we could create an Actor using the actorOf method of the ActorSystem. There’s actually much more you could do with ActorSystem. We’ll touch upon just the Configuration and the Scheduling bit in this write-up. Let’s look at the subsets of methods available in the ActorSystem.             1. Configuration ...

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MongoDB Incremental Migration Scripts

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Introduction An incremental software development process requires an incremental database migration strategy. I remember working on an enterprise application where the hibernate.hbm2ddl.auto was the default data migration tool. Updating the production environment required intensive preparation and the migration scripts were only created on-the-spot. An unforeseen error could have led production data corruption. Incremental updates to the rescue The incremental database ...

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Java EE 7 Batch Processing and World of Warcraft – Part 1

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This was one of my sessions at the last JavaOne. This post is going to expand the subject and look into a real application using the Batch JSR-352 API. This application integrates with the MMORPG World of Warcraft. Since the JSR-352 is a new specification in the Java EE world, I think that many people don’t know how to use ...

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The Cloud Winners and Losers?

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The cloud is revolutionising IT. However there are two sides to every story: the winners and the losers. Who are they going to be and why? If you can’t wait here are the losers: HP, Oracle, Dell, SAP, RedHat, Infosys, VMWare, EMC, Cisco, etc. Survivors: IBM, Accenture, Intel, Apple, etc. Winners: Amazon, Salesforce, Google, CSC, Workday, Canonical, Metaswitch, Microsoft, ARM, ...

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