Core API and libraries of hamcrest matcher framework.

Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can 'just run'. It takes an opinionated view of the Spring platform and third-party libraries so you can get started with minimum configuration.

A Java DSL for synchronizing asynchronous operations

Caffeine is a high performance, near optimal caching library. It provides an in-memory cache using a Google Guava inspired API.

Java DSL for easy testing of REST services

Spock is a testing and specification framework for Java and Groovy applications. What makes it stand out from the crowd is its beautiful and highly expressive specification language.

Jakarta RESTful Web Services

Kafka client library for building producers and consumers that interact with Apache Kafka clusters for high-throughput distributed messaging.

Jedis is a blazingly small and sane Redis java client.

Apache HttpComponents Client

The Apache Log4j 1.x Compatibility API