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Persistent breakpoints every java developer should have

When a developer is working in Java there are a few failure cases you always want to know about even if you were trying to debug something else. Here is a list of the persistent breakpoints ...
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Spring from the Trenches: Adding Validation to a REST API

I am a bit ashamed to admit this but until yesterday, I had no idea that I can add validation to a REST API by using the @Valid and the @RequestBody annotations. This was not working ...
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Experiment with ConcurrentHashmap

I am investigating a memory issue in one of my recent projects where data is kept in memory for fast access, but the memory footprint of application is very high. This application was heavily using ...
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Latency number that you should know

Latency number that you should know Many of you work on low latency & high throughput systems. The key to developing such systems is understanding latency, be it of CPU cache, RAM, ...
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Testing triangles, pyramids and circles, and UAT

A few months ago Markus Gartner introduced me to the Testing Triangle, or Testing Pyramid. It looks like this:If you Google you will find a few slightly different version and some ...
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Continuous Delivery – Part 3 – Feature Toggles

Previous chapter: The Road To Continuous Delivery – Part 2 – Visibility One of the key elements in Continuous Delivery is the fact that you stop working with feature branches ...
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Accessing An Artifact’s Maven And SCM Versions At Runtime

You can easily tell Maven to include the version of the artifact and its Git/SVN/… revision in the JAR manifest file and then access that information at runtime via getClass().getPackage.getImplementationVersion(). ...
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How to easily optimize Task Management

When dealing with different types of tasks and priorities, often happens to mistakenly consider urgency and importance as synonyms and hence manage tasks, resources and time with a ...
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Parsing XML using DOM, SAX and StAX Parser in Java

I happen to read through a chapter on XML parsing and building APIs in Java. And I tried out the different parser available on a sample XML. Then I thought of sharing it on my blog ...
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7 Agile Best Practices that You Don’t Need to Follow

There are many good ideas and practices in Agile development, ideas and practices that definitely work: breaking projects into Small Releases to manage risk and accelerate feedback; ...
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