Nowadays every application is moving to microservice architecture. In this architecture, API Gateway has an important role. Let's build a simple API gateway using Java.
Avoiding duplication is drilled into a programmer's head. How does the concept apply to user interfaces? How do you avoid re-writing HTML and CSS constantly?
Currently, when we test multi-thread Java we call the class under test by as many threads possible. This approach has the disadvantage that most of the time our faulty test succeeds which makes debugging multi-threaded bugs a nightmare. I, therefore, developed an open-source tool, vmlens, to make JUnit test of multi-threaded Java deterministic.
Application performance is always on the forefront of our minds, and Garbage Collection optimization is a good place to make small, but meaningful advancements.
In this tutorial, I will discuss advanced PWA features that provide access to your hardware APIs. We are going to build an app for making selfies with the Media Capture API and posting selfies with the BackgroundSync Api.