AssertJ is a library providing easy to use rich typed assertions

Apache DataFusion SQL Query Engine

Blazing-fast query execution engine speaks Apache Spark language and has Arrow-DataFusion at its core.

iocp for linux

Apache BookKeeper - a scalable, fault tolerant and low latency storage service optimized for append-only workloads

Apache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Apache Log4j 2 is a versatile, feature-rich, efficient logging API and backend for Java.

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A collection of articles written by YinWang

Alluxio, data orchestration for analytics and machine learning in the cloud

Apollo Java Clients

Netty project - an event-driven asynchronous network application framework

Firestorm is a Remote Shuffle Service, and provides the capability for Apache Spark applications to store shuffle data on remote servers

Shuttle：High Available, High Performance Remote Shuffle Service

Remote Shuffle Service for Flink

Mirror of Apache Kafka

A production-grade java implementation of RAFT consensus algorithm.

Java / JavaFX / Kotlin Game Library (Engine)

Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, Streams, HyperLogLogs,…

LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

Remote shuffle service for Apache Spark to store shuffle data on remote servers.

alibabacloud-jindofs

State of the art mutation testing system for the JVM