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JDK 9 – a letter to Santa?!

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As everybody knows, winter (especially the time before Christmas) is a proper time for dreaming and hoping a moment when dreams seem to be touchable. A moment when children and grown-ups write on paper or in their thoughts fictive or real letters to Santa Claus, hoping their dreams will become reality. This is catchy, as even the people behind OpenJDK ...

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Java EE 7 Hands-on Lab on WildFly and Docker

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Java EE 7 Hands-on Lab has been delivered all around the world and is a pretty standard application that shows design patterns and anti-patterns for a typical Java EE 7 application. It shows how the following technologies can be used in a close-to-real-world application:               WebSocket 1.0 JSON Processing 1.0 Batch 1.0 Contexts & ...

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Writing your own logging service?

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Application logging is one those things like favorite Editors war: everyone has their own opinions and there are endless of implemenations and flavors out there. Now a days, you likely would want to use something already available such as Log4j or Logback. Even JDK has a built in “java.util.logging” implementation. To avoid couple to a direct logger, many projects would ...

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In Favour of Self-Signed Certificates

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Today I watched the Google I/O presentation about HTTPS everywhere and read a couple of articles, saying that Google is going to rank sites using HTTPS higher. Apart from that, SPDY has mandatory usage of TLS, and it’s very likely the same will be true for HTTP/2. Chromium proposes marking non-HTTPS sites as non-secure. And that’s perfect. Except, it’s not ...

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ROI Is Dead!

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Last month I was in Huib Schoots’ workshop. He talked about being asked “What’s the ROI of testing?”. To which he replied “I don’t know, what’s the ROI of management?”. We are really obsessed with ROI, aren’t we? We use it a lot as a tool for decision making, but are we using it wisely? ROI (Return On Investment) is ...

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How to test a REST api from command line with curl

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If you want to quickly test your REST api from the command line, you can use curl. In this post I will present how to execute GET, POST, PUT, HEAD, DELETE HTTP Requests against a REST API. For the purpose of this blog post I will be using the REST api developed in my post Tutorial – REST API design ...

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Not using UML on Projects is Fatal

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The Unified Modeling Language (UML) was adopted as a standard by the OMG in 1997, almost 20 years ago. But despite its longevity, I’m continually surprised at few organizations actually use it. Code is the ultimate model for software, but it is like the trees of a forest.  You can see a couple, but only few people can see the entire ...

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Open Source Cloud Formation with Minotaur for Mesos, Kafka and Hadoop

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Today I am happy to announce “Minotaur” which is our Open Source AWS based infrastructure for managing big data open source projects including (but not limited too): Apache Kafka, Apache Mesos and Cloudera’s Distribution of Hadoop. Minotaur is based on AWS Cloud Formation. The following labs are currently supported:           Apache Mesos Apache Kafka Apache Zookeeper Cloudera Hadoop ...

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Working With Legacy Code, What does it Really Mean

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At the end of January I am going to talk in Agile Practitioners 2015 TLV. I’ll be talking about Legacy Code and how to approach it. As the convention’s name implies, we’re talking practical stuff. So what is practical in working with legacy code? Is it how to extract a method? Or maybe it’s how to introduce setter for a ...

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Outsourcing, Do It Right

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Most of the times outsourcing is a nightmare. Companies outsource the activities that are not their core activity nevertheless needed for business to get the job done as cheap as possible. They look at it as some necessary evil, something that would better be not to know all about, forget the details and have it been done. Many times IT ...

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