Metrics provides a powerful toolkit of ways to measure the behavior of critical components in your production environment
Failsafe is a lightweight, zero-dependency library for handling failures. It was designed to be as easy to use as possible, with a concise API for handling everyday use cases and the flexibility to handle everything else. Failsafe
Version control for your database so you can migrate it with ease and confidence.
Guava is a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more!
A small Java class to generate YouTube-like hashes from one or many numbers.
Fast, simple, reliable. HikariCP is a "zero-overhead" production ready JDBC connection pool. At roughly 130Kb, the library is very light.
A high performance JSON serialization library with pojo data binding as well as a lower level streaming API.
Java port of Handlebars HTML templating (http://handlebarsjs.com/).
A simple and performant Java logging library which implements SLF4J apis.
OkHttp is a modern java HTTP client with sane defaults and built for resiliency. It supports HTTP/2, GZIP, caching, logging, following redirects and much more.
The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks (e.g. java.util.logging, logback, log4j) allowing the end user to plug in the desired logging framework at deployment time.
SitemapGen4j is a library to generate XML sitemaps in Java.
Typesafe Config is a JVM configuration library with a simple and clean API with a rich feature set.
Undertow is a highly performant Java web server which provides both blocking and non-blocking API's based on NIO. The embeddable server is easily configured and also has sane defaults for modern web development. The API is clean and request lifecycle is very straight forward. HttpHandlers are the single purpose building blocks for handling requests and responses and provide you with as much or little flexibility as you need.
Java implementation of a HTML compressor.
jBCrypt is a Java™ implementation of OpenBSD's Blowfish password hashing code, as described in "A Future-Adaptable Password Scheme" by Niels Provos and David Mazières.
jOOλ improves the JDK libraries in areas where the Expert Group's focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams.
jsoup is a Java library for working with real-world HTML. It provides a very convenient API for extracting and manipulating data, using the best of DOM, CSS, and jquery-like methods. jsoup implements the WHATWG HTML5 specification, and parses HTML to the same DOM as modern browsers do.