Testing Microservices with WireMock
In this series we will look at how WireMock can help the development and testing of Microservices. The first part will focus on a standalone setup to understand what WireMock …
Compiler Hinting with Kotlin Contracts
Kotlin’s built-in null-safety makes it easy for us to write code that’s less error-prone and less susceptible to the unwanted and unexpected NullpointerException at runtime. We can do a lot to make …
Going functional and fullstack with Spring Fu and Kotlin
Spring Fu is an experimental Kotlin micro-framework that makes it easy to create lightweight Spring-powered applications with functional APIs instead of annotations. Fu is for functional API, but that’s also …
Consumer Driven Contracts
Microservice integration Organizations that move towards microservices, experience new issues that come with this way of working. Imagine it’s the last day of the sprint and you spot a really …
Java 10: Local Variable Type Inference
With Java 10 a new feature was introduced to the language: local variable type inference. In this short post, I am going to take a closer look at what this …
Optional Kotlin
Last week I was working on a code base which had been partially converted from Java to Kotlin. The converted Java code base was making extensive use of java.util.Optional. The …
Kotlin properties – from basic to lazy
Kotlin has many things going for it, with one of the main qualities being its built-in null-safety. This guarantees that properties will always have a non-null value at runtime, greatly …
Kotlin Quick Tip: Annotation targets
If you — like me — are a sucker for reducing boilerplate and are using JSR-303 – Bean Validation (I use it as part of Spring Boot) then you may …
JMockit extensions for Kotlin
Sometimes you have to deal with existing libraries… also libraries that do not provide out-of-the-box support for Kotlin (bastards!). What do you do in such a scenario? Write your own …
Spring Boot Admin
While browsing the internet I stumbled upon a nice tool called spring-boot-admin (https://github.com/codecentric/spring-boot-admin). This tool, made by Codecentric, offers a nice overview that gives you access to things like metrics, …