😱 从源码层面，剖析挖掘互联网行业主流技术的底层实现原理，为广大开发者 “提升技术深度” 提供便利。目前开放 Spring 全家桶，Mybatis、Netty、Dubbo 框架，及 Redis、Tomcat 中间件等

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

A Java implementation of OpenBSD's Blowfish password hashing code

fastdfs client for java, based on netty.