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Akka Java for large-scale event processing

We are designing a large scale distributed event-driven system for real-time data replication across transactional databases. The data(messages) from the source system undergoes a ...
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Continuous Delivery: Introduction to concepts and tools

This is the first article in a “Continuous Delivery” series. We’ll start out journey with brief explanation of Continuous Delivery. After short exploration of some of the tools ...
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Insight view: Perfect Test Automation

Nothing is perfect in the world, except the football skill of Leo Messi. Yeah, maybe not always but in most cases it’s impossible to create an ideal process. But I’m not scared ...
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Clojure: How To Prevent “Expected Map, Got Vector” And Similar Errors

What my Clojure code is doing most of the time is transforming data. Yet I cannot see the shape of data being transformed – I have to know what the data looks like on the input and ...
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Professional connection pool sizing

Introduction I previously wrote about the benefits of connection pooling and why monitoring it is of crucial importance. This post will demonstrate how Flexy Pool can assist you in ...
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69 Spring Interview Questions and Answers – The ULTIMATE List

This is a summary of some of the most important questions concerning the Spring Framework, that you may be asked to answer in an interview or in an interview test procedure! There is ...
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You can program bug free

You can not. This is a lie, just like the cake. You can lower the number of bugs. The more you spend wisely on QA the less bugs you will have. The magic word is “wisely”. You can ...
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Just What Are Spring 3.2 Matrix Variables? – Part 2: The Code

My last blog on Spring’s support for Matrix Variables concentrated on explaining what they were and why you’d want to use them. Having sorted out the what and the why, this ...
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10 Features in Java 8 You Haven’t Heard Of

Lambdas lambdas lambdas. That’s all you ever hear about when talking about Java 8. But that’s just one part. Java 8 has a lot of new features – some are powerful new classes and ...
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NoSQL? No, SQL! – How to Calculate Running Totals

If anything at all, our jOOQ talks at various JUGs and conferences have revealed mostly one thing: Java developers don’t know SQL. And it isn’t even necessarily our fault. We’re ...
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