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

Distributed scheduled job

📌 a missing Java std lib(simple & 0-dependency) for framework/middleware, provide an enhanced InheritableThreadLocal that transmits values between threads even using thread pooling components.

An open source framework for building data analytic applications.

NetDiscovery 是一款基于 Vert.x、RxJava 2 等框架实现的通用爬虫框架/中间件。

Java client for NATS

An open source, a high-performance hybrid integration platform that allows developers quick integration with any application, data, or system.

Apache Wayang(incubating) is the first cross-platform data processing system.

生产在用，读得懂的RocketMQ分支; 2本小书 + 500张图 + 2W多行注释，...

A transport protocol agnostic (MQTT, HTTP, WebSockets etc.) Franca IDL based communication framework supporting multiple communication paradigms (RPC, Pub-Sub, broadcast etc.)

《Spring Cloud 微服务架构进阶》各章节附录源码

A local reactive cache for Java and Android. Now, it supports heap memory、off-heap memory and disk cache.

分布式键值系统，供学习使用，不断完善中。截至目前：根据LSM论文，并结合CPP已有的实现，利用Java实现了LSM架构；综合Dubbo等框架的特点，实现了简洁的RPC框架。

Distributed database middleware

🚀一个开源高性能轻量级延迟任务调度系统

A middleware abstraction library that provides a simple programming interface to various compute and storage resources.

Java SDK for BlazingMQ, a modern high-performance open source message queuing system.

Framework for Java and Groovy Agents

Distributed database middleware

A lightweight & highly extensible CQRS Command Bus for implementing application services and CQRS architectural pattern in Java