* 核心理论为[Google Dapper论文:Dapper, a Large-Scale Distributed Systems Tracing Infrastructure](http://research.google.com/pubs/pub36356.html),英语有困难的同学可参考[国内翻译](http://duanple.blog.163.com/blog/static/70971767201329113141336/)
* SkyWalking is an open source Large-Scale Distributed Systems Tracing Infrastructure, also been known as APM(Application Performance Management) tool. SkyWalking provides a solution to help monitor and analysis a Large-Scale Distributed Systems.
* 支持国内常用的dubbo以及dubbox等常见RPC框架,支持应用异常的邮件告警
* SkyWalking supports popular rpc frameworks, such as [dubbo(https://github.com/alibaba/dubbo)], [dubbox(https://github.com/dangdangdotcom/dubbox)], etc., supports email-alert when application occurs unexpected exception。
* SkyWalking supports popular rpc frameworks, such as [dubbo](https://github.com/alibaba/dubbo), [dubbox](https://github.com/dangdangdotcom/dubbox), etc., supports email-alert when application occurs unexpected exception。
* skywalking-sdk层面提供的埋点API,同步阻塞访问时间小于100μs
* SkyWalking's basic API, execution time of blocking saving span must less than 100μs.
* By using [byte-buddy](https://github.com/raphw/byte-buddy)(Thanks), some plugins use dynamic byte code mechanisms to avoid invasive codes. plugins API, execution time of blocking saving span must between 200μs and 300μs, including execution time dynamic byte code.