RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

Netty project - an event-driven asynchronous network application framework

Mirror of Apache Kafka

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

High Performance Inter-Thread Messaging Library

Zipkin is a distributed tracing system

Open-source IoT Platform - Device management, data collection, processing and visualization.

The official home of the Presto distributed SQL query engine for big data

A high performance caching library for Java

Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.

Apache Druid: a high performance real-time analytics database.

Redis Java client

Resilience4j is a fault tolerance library designed for Java8 and functional programming

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Apache Storm

Asynchronous Http and WebSocket Client library for Java

configuration library for JVM languages using HOCON files

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

BTrace - a safe, dynamic tracing tool for the Java platform

Apache Camel is an open source integration framework that empowers you to quickly and easily integrate various systems consuming or producing data.

Apache Pinot - A realtime distributed OLAP datastore

Demonstrates the features of the Spring MVC web framework

Reactive Streams Specification for the JVM

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, R…

Fibers, Channels and Actors for the JVM

Fork of tagtraum industries' GCViewer. Tagtraum stopped development in 2008, I aim to improve support for Sun's / Oracle's java 1.6+ garbage collector logs (including G1 collector)

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.