OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

Zipkin is a distributed tracing system

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

Apache Doris is an easy-to-use, high performance and unified analytics database.

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

Style and Grammar Checker for 25+ Languages

AWS Service registry for resilient mid-tier load balancing and failover.

Apache Cassandra®

Apache Hive

Benchmark comparing serialization libraries on the JVM

Listen to current network traffic in the app and categorize the quality of the network.

ZooKeeper client wrapper and rich ZooKeeper framework

Facebook's Realtime Distributed FS based on Apache Hadoop 0.20-append

a high level client for cassandra

A sample for the Cronet library

《深度剖析Apache Dubbo技术内幕》一书Demo