Quick tip: ISO 8601 durations in Java

Many developers know about the interchange formats for dates and times defined by ISO 8601. (For example 2007-08-31T16:47+00:00 which represents…

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Getting started with Ktor

Ktor (pronounced kay-tor) is an open source Kotlin framework for building asynchronous web applications. This post shows how to create…

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Integrating JSON Schema validation in Spring using a custom HandlerMethodArgumentResolver

In previous posts we learned about JSON Schema and how we can validate a JSON document against a JSON Schema…

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REST: Managing One-To-Many relations

In a previous post we looked at many-to-many relations. This time we will see how to model one-to-many relations in…

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JSON Schema validation in Java

In this post we will see how to validate a JSON document against a JSON Schema in Java. We will…

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Validating and documenting JSON with JSON Schema

JSON Schema is a way to describe a JSON document. You can think of XML Schema for JSON. It allows…

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Common HTTP Status codes

What is a HTTP status code? HTTP status codes are part of the status-line of a HTTP response. These 3-digit…

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Kotlin / IntelliJ quick hint: Operator navigation

This is just a quick hint if you are programming Kotlin with IntelliJ: In IntelliJ you can ctrl-click on operators…

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REST: Creating resources

Resource creation is a common REST API operation. In this post we will see how single resource can be created.…

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