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Spring Rest API with Swagger – Creating documentation

The real key to making your REST API easy to use is good documentation. But even if your documentation is done well, you need to set your company processes right to publish it correctly ...
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Clean Unit Test Patterns – Presentation Slides

I was given the opportunity to talk at the GDG DevFestKarlsruhe 2014 conference about ‘Clean Unit Test Patterns’. Thanks to the organizers for inviting me and thanks to all people ...
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Apache Commons IO Tutorial: A beginner’s guide

Apache Commons IO is a Java library created and maintained by the Apache Foundation. It provides a multitude of classes that enable developers to do common tasks easily and with much ...
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Chronicle Map and Yahoo Cloud Service Benchmark

Overview Yahoo Cloud Service Benchmark is a reasonably widely used benchmarking tool for testing key value stores for a significant number of key e.g 100 million, and a modest number ...
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Spring Boot Actuator: custom endpoint with MVC layer on top of it

Spring Boot Actuator endpoints allow you to monitor and interact with your application. Spring Boot includes a number of built-in endpoints and you can also add your own.   Adding ...
java-interview-questions-answers

Securing WebSockets using Username/Password and Servlet Security

RFC 6455 provide a complete list of security considerations for WebSockets. Some of them are baked in the protocol itself, and others need more explanation on how they can be achieved ...
java-interview-questions-answers

Java EE 7 / JAX-RS 2.0: Simple REST API Authentication & Authorization with Custom HTTP Header

REST has made a lot of conveniences when it comes to implementing web services with the already available HTTP protocol at its disposal. By just firing GET, POST and other HTTP methods ...
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Quo Vadis JUnit

For me JUnit is the most important library of the Java universe. But I think a new version of it is overdue. With it’s approach of having a method definition as a test definition ...
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When a String is Null but Not Null

Introduction A junior programmer on my team at work had an interesting bug.  Its symptoms I have seen more than once.  This post is what to look for and how to prevent it in the future.  ...
java-interview-questions-answers

Resource scheduling and task launching with Apache Mesos and Apache Aurora at Twitter

Episode # 23 of the podcast was a talk with Bill Farner Bill explained how Twitter, using Apache Mesos and Apache Aurora, gets more for their money for the hardware and saves engineering ...
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