Sky Walking | [中文](README_ZH.md)
==========
**SkyWalking 3**: APM for Distributed Systems, also known Distributed Tracing System.
[![Build Status](https://travis-ci.org/OpenSkywalking/skywalking.svg?branch=master)](https://travis-ci.org/OpenSkywalking/skywalking)
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[![OpenTracing-1.x Badge](https://img.shields.io/badge/OpenTracing--1.x-enabled-blue.svg)](http://opentracing.io)
* Provide Java agent, **no need to CHANGE any application source code**.
* High performance agent. Only increase extra **10%** cpu cost in 5000+ tps application, even **when collect all traces**.
* [Supported middlewares, frameworks and libraries](https://github.com/OpenSkywalking/sky-walking/wiki/3.2-supported-list).
* Manual instrumentation
* As an [OpenTracing supported tracer](http://opentracing.io/documentation/pages/supported-tracers)
* Use **@Trace** annotation for any methods you want to trace.
* Integrate traceId into logs for log4j, log4j2 and logback.
* Pure Java server implementation, provide RESTful and gRPC services. Compatibility with other language agents/SDKs.
* The UI released on [skywalking-ui](https://github.com/OpenSkywalking/sky-walking-ui)
# Architecture
* Architecture graph for 3.2.5+
# Document
[![EN doc](https://img.shields.io/badge/document-English-blue.svg)](docs/README.md) [![cn doc](https://img.shields.io/badge/document-中文-blue.svg)](docs/README_ZH.md)
This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to wu.sheng@foxmail.com.
# Screenshots
- Topological graph of application clusters based on dubbox and [motan](https://github.com/weibocom/motan).
- Trace query.
- Span detail.
- Instance Overview.
- JVM Detail.
- Services Dependency Tree.
# Test reports
- Automatic integration test reports
- [Java Agent test report](https://github.com/SkywalkingTest/agent-integration-test-report)
- Performance test reports
- [Java Agent test report](https://skywalkingtest.github.io/Agent-Benchmarks/)
# Contact Us
* Submit an issue
* [Gitter](https://gitter.im/openskywalking/Lobby)
* [Google Mailing List](https://groups.google.com/forum/#!forum/skywalking-distributed-tracing-and-apm)
* QQ Group: 392443393
# Open Skywalking Organization
[Open Skywalking Organization Teams and Contributors](https://github.com/OpenSkywalking/Organization/blob/master/README.md)
# Partners
# License
[Apache 2.0 License.](/LICENSE)