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Six Tips for Interviewing Scrum Masters, Part 1

People want to know the “secret sauce” for hiring Scrum Masters and agile coaches. I wish it was easy to provide a standard set of questions. Because your agile team is unique, ...
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Jar Hell made Easy – Demystifying the classpath with jHades

Some of the hardest problems a Java Developer will ever have to face are classpath errors: ClassNotFoundException, NoClassDefFoundError, Jar Hell, Xerces Hell and company. In this post ...
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Java EE 7 with Angular JS – CRUD, REST, Validations – Part 2

This is the promised follow up to the Java EE 7 with Angular JS – Part 1. It took longer than I expect (to find the time to prepare the code and blog post), but it’s finally here! The ...
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Kafka Benchmark on Chronicle Queue

Overview I was recently asked to compare the performance of Kafka with Chronicle Queue.  No two products are exactly alike, and performing a fair comparison is not easy.  We can try ...
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How to connect to MongoDB from a Java EE stateless application

In this post I will present how to connect to MongoDB from a stateless Java EE application, to take advantage of the built-in pool of connections to the database offered by the MongoDB ...
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Reducing the frequency of major GC pauses

This post will discuss a technique to reduce the burden garbage collection pauses put on the latency of your application. As I have written couple of years ago, disabling garbage collection ...
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Dead simple configuration

Whole frameworks have been written with the purpose of handling the configuration of your application. I prefer a simpler way. If by configuration we mean “everything that is likely ...
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Akka Notes – Actor Logging and Testing

In the first two parts (one, two), we briefly talked about Actors and how messaging works. In this part, let’s look at fixing up Logging and Testing our TeacherActor. Recap This ...
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Visualizing engineering fields

Civil engineering.                      Mechanical engineering.    Electronic engineering.    Software ...
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R: A first attempt at linear regression

I’ve been working through the videos that accompany the Introduction to Statistical Learning with Applications in R book and thought it’d be interesting to try out the linear regression ...
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