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Several new people coming to the Eclipse MicroProfile project have been asking the same question:
“Why there are micro/patch releases for the individual MicroProfile specifications when the parent umbrella specification always references only the minor versions?“
by David Chan and Charlotte Holt
MicroProfile Metrics 2.0 introduces several changes over MicroProfile Metrics 1.x. If you’ve previously written an application using Metrics 1.x, you might need to make some changes to the app to migrate it to Metrics 2.0. In particular, the @Counted annotation in Metrics 1.x could be monotonic or non-monotonic but, in Metrics 2.0, is now only monotonic with a separate @ConcurrentGauge annotation for non-monotonic counting.
Welcome to the world of microservices! We now can provide you with the tools you miss from your time with Java EE, while still leaving you free to switch application server whenever you want, without having to change your Java code.
Twelve Factor App, a widely adopted methodology, defines best practices for creating microservices. MicroProfile and Kubernetes can be used to implement the 12 factors, clarifying the boundary between application and infrastructure, minimising divergence between development and production, and enabling microservices to scale easily.
In this article, we will cover how developers can create a microservice with Java using the Eclipse MicroProfile specifications with the DevOps friendly application server, Apache TomEE.
