Git tags are a simple and effective way to make sure you can keep track of the different versions of your code, and an important quality of Git's version control.
This great primer for Contexts and Dependency Injection covers the need for it and a simple implementation in a Java EE environment that focuses on injecting properties.
Load testing chat plugins is just as important as load testing your whole website or web application. Let's take a look at how to accomplish this using JMeter.