a demo of how to use kotlin to make "invalid domain states unrepresentable"

A design pattern to assemble Workflows into a UseCase

Performance-oriented Data Structures for Kotlin

Hexagon is a microservices toolkit written in Kotlin. Its purpose is to ease the building of services (Web applications or APIs) that run inside a cloud platform.

Microservice arch deployed as monolith

A comprehensive Domain-Driven Design example with problem space strategic analysis and various tactical patterns.

Source code listings and exercises for Functional Programming in Kotlin

A realworld api example app featuring Arrow, Kotlin and Spring Boot.

Configuration DSLs for Spring Boot

An example approach for implementing a Clean/Hexagonal Architecture

Purely functional data structures in Java

The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming

Functional patterns for Java

Fault tolerance and resilience patterns for the JVM

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

A JavaScript Internationalization Framework

Eclipse Collections is a collections framework for Java with optimized data structures and a rich, functional and fluent API.

Power assertions (as known from Groovy and Spock) for the Scala language.

JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.

Java annotation processor to create immutable objects and builders. Sweeps boilerplate code under the rug since 2013!

Elasticsearch Java Rest Client.

Ghost Driver is an implementation of the Remote WebDriver Wire protocol, using PhantomJS as back-end