DBCP Database Connection Pools
实践HttpClient
实践CommonsHttpClient
实践代码覆盖Codecov
实践持续集成测试之Travis CI
Travis CI 是在线托管的CI服务，用Travis来进行持续集成，不需要自己搭服务器，在网页上点几下就好，用起来更方便。最重要的是，它对开源项目是免费的。
实践Lombok
Lombok is a java library that automatically plugs into your editor and build tools, spicing up your java. Never write another getter or equals method again. Early access to future java features such as val, and much more.
实践性能测试之YCSB
YCSB, Yahoo! Cloud Serving Benchmark