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Typed ask for Akka

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Akka is a great tool for writing distributed applications. One thing that always surprised me though is that while being based on Scala, which is a very type-safe language, the elementary construct in Akka – an actor – is not really type safe. You can send any message to any actor, and get back any object in reply. The upcoming ...

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The Road To Continuous Delivery – Part 2 – Visibility

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Previous chapter: The road to continuous delivery – Part 1 Production visibility A key point for a successful continuous delivery is to make the production matrix available to the developers. At the heart of continuous delivery methodology is to empower the developer and make the developers responsible for deployment and successful operations of the production environment. In order for the ...

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The Road To Continuous Delivery – Part 1

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The following series of posts are coming from my experience as the back-end development manager at Wix.com. I will try to tell the story of Wix and how we see and practice continuous delivery, hoping it will help you make the switch too. So you decided that your development process is too slow and thinking to go to continuous delivery ...

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ARM Virtualization – ARM vs x86 (Part 5)

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Sorry for the delay in this post. I could not get to this post in time and wanted to be sure it is well-researched. The final post in this series is a comparison of the hardware support in the ARM and x86 world. As mentioned in the previous post the biggest reason for ARM to include virtualization in their architecture ...

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Spring Data Solr Tutorial: CRUD (Almost)

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In the previous part of my Spring Data Solr tutorial, we learned how we can configure Spring Data Solr. Now it is time to take a step forward and learn how we can manage the information stored in our Solr instance. This blog entry describes how we add new documents to the Solr index, update the information of existing documents ...

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Spring Data Solr Tutorial: Configuration

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In the previous part of my Spring Data Solr tutorial, we learned that Solr provides a REST-like HTTP API which can be used to add information to Solr index and execute queries against indexed data. The problem is that running a separate Solr instance in a development environment is a bit cumbersome. However, not all hope is lost because Solr ...

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How could Scala do a merge sort?

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Merge sort is a classical “divide and conquer” sorting algorithm. You should have to never write one because you’d be silly to do that when a standard library class already will already do it for you. But, it is useful to demonstrate a few characteristics of programming techniques in Scala. Firstly a quick recap on the merge sort. It is ...

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Running Solr with Maven

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Running Solr with Maven Solr is an open source search server which is built by using the indexing and search capabilities of Lucene Core, and it can be used for implementing scalable search engines with almost any programming language. Even though Solr has many advantages, setting up a a development environment is not one of them. This blog entry describes ...

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Secure Web Application in Java EE6 using LDAP

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In our previous article we have explained on how to protect the data while it is in transit through Transport Layer Security (TLS)/Secured Socket Layer (SSL). Now let us try to understand how to apply security mechanism for a JEE 6 based web application using LDAP server for authentication. Objective: •    Configure a LDAP realm in the JEE Application Server ...

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