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Developing Modern Applications with Scala: Testing

This article is part of our Academy Course titled Developing Modern Applications with Scala. In this course, we provide a framework and toolset so that you can develop modern Scala applications. We cover a wide range of topics, from SBT build and reactive applications, to testing and database acceess. With our straightforward tutorials, you will be able to get your ...

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How to Inspire Community in Programming

After coming back from a Ruby for Good event, I’m reflecting on how I’ve experienced firsthand many of the principles necessary for growing and inspiring community in programming. Ruby for Good is an annual meetup where people donate their time and abilities to “build projects that help our communities.” People with any experience level can participate, from those just learning ...

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Thank You Notes: They’re Not Just About Gratitude

Thank You notes have been part of the job search tradition for many years, and although the typical delivery format has been updated (email is fine), I tend to find that candidates still primarily view the note as a gesture of gratitude or a formality. I suggest that job seekers instead view the Thank You note as an opportunity to ...

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Using MapR, Mesos, Marathon, Docker, and Apache Spark to Deploy and Run Your First Jobs and Containers

This blog post describes steps for deploying Mesos, Marathon, Docker, and Spark on a MapR cluster, and running various jobs as well as Docker containers using this deployment. Here are the components that we’re going to use: Mesos: an open-source cluster manager. Marathon: a cluster-wide init and control system. Spark: an open source cluster computing framework. Docker: automates the deployment ...

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5 Common Hibernate Exceptions and How to Fix Them

See how you can easily solve the most common issues with Hibernate Hibernate is probably the most popular JPA implementation on the market and you can see that in many places, like: The number of projects in which you’ve used it yourself, The number of job positions which ask for Hibernate experience and of course The number of questions and ...

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Servants, not leaders, not managers

Sharp eyed readers of my management mini-series will have noticed I referred to managers doing administration several times, Peter Hilton mailed me to ask me more about this. Let me image such a manager, let me imagine the worst possible scenario… This manager spends a lot of time involved in admin. Finance forms a lot of this, juggling a budget, ...

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Insert Items to DynamoDB Tables using Java

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On a previous article we learned how to create DynamoDB Tables using Java. Next step is to insert items to the DynamoDB Tables previously created. Keep in mind that for the insert action the most basic step is to specify the the primary key. For the table users the primary key is the attribute email. You can add as many attributes as ...

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Product Owners and Learning, Part 4

Part 1 was about how the PO needs to see the big picture and develop the ranked backlog. Part 2 was about the learning that arises from small stories. Part 3 was about ranking. In this part, I’ll discuss the product owner value team and how to make time to do “everything,” and especially how to change stories. Let’s imagine you started ...

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