README.md - skywalking - Git at Google

 Apache SkyWalking
 ==========

 <img src="http://skywalking.apache.org/assets/logo.svg" alt="Sky Walking logo" height="90px" align="right" />

 **SkyWalking**: an APM(application performance monitor) system, especially designed for
 microservices, cloud native and container-based (Docker, Kubernetes, Mesos) architectures.

 [![GitHub stars](https://img.shields.io/github/stars/apache/skywalking.svg?style=for-the-badge&label=Stars&logo=github)](https://github.com/apache/skywalking)
 [![Twitter Follow](https://img.shields.io/twitter/follow/asfskywalking.svg?style=for-the-badge&label=Follow&logo=twitter)](https://twitter.com/AsfSkyWalking)

 [![Maven Central](https://img.shields.io/maven-central/v/org.apache.skywalking/apache-skywalking-apm.svg)](http://skywalking.apache.org/downloads/)
 [![CI/IT Tests](https://github.com/apache/skywalking/workflows/CI%20AND%20IT/badge.svg?branch=master)](https://github.com/apache/skywalking/actions?query=workflow%3ACI%2BAND%2BIT+event%3Aschedule+branch%3Amaster)
 [![E2E Tests](https://github.com/apache/skywalking/workflows/E2E/badge.svg?branch=master)](https://github.com/apache/skywalking/actions?query=branch%3Amaster+event%3Aschedule+workflow%3AE2E)

 # Abstract
 **SkyWalking** is an open source APM system, including monitoring, tracing, diagnosing capabilities for distributed system
 in Cloud Native architecture.
 The core features are following.

 - Service, service instance, endpoint metrics analysis
 - Root cause analysis. Profile the code on the runtime
 - Service topology map analysis
 - Service, service instance and endpoint dependency analysis
 - Slow services and endpoints detected
 - Performance optimization
 - Distributed tracing and context propagation
 - Database access metrics. Detect slow database access statements(including SQL statements)
 - Alarm
 - Browser performance monitoring
 - Infrastructure(VM, network, disk etc.) monitoring
 - Collaboration across metrics, traces, and logs

 <img src="http://skywalking.apache.org/assets/frame-v8.jpg?u=20201105"/>

 SkyWalking supports to collect telemetry (metrics, traces, and logs) data from multiple sources
 and multiple formats,
 including
 1. Java, .NET Core, NodeJS, PHP, and Python auto-instrument agents.
 1. Go and C++ SDKs.
 1. LUA agent especially for Nginx, OpenResty and Apache APISIX.
 1. Browser agent.
 1. Service Mesh Observability. Control panel and data panel.
 1. Metrics system, including Prometheus, OpenTelemetry, Spring Sleuth(Micrometer), Zabbix.
 1. Logs.
 1. Zipkin v1/v2 trace.(No Analysis)

 SkyWalking OAP is using the STAM(Streaming Topology Analysis Method) to analysis topology in the tracing based agent scenario
 for better performance. Read [the paper of STAM](https://wu-sheng.github.io/STAM/) for more details.

 # Documentation
 - [Official documentation](https://skywalking.apache.org/docs/)
 - [The paper of STAM](https://wu-sheng.github.io/STAM/), Streaming Topology Analysis Method.
 - [Blog](https://skywalking.apache.org/blog/2020-04-13-apache-skywalking-profiling/) about Use Profiling to Fix the Blind Spot of Distributed Tracing
 - [Blog](https://skywalking.apache.org/blog/2020-12-03-obs-service-mesh-with-sw-and-als/) about observing Istio + Envoy service mesh with ALS solution.
 - [Blog](https://skywalking.apache.org/blog/obs-service-mesh-vm-with-sw-and-als/) about observing Istio + Envoy service mesh with ALS Metadata-Exchange mechanism (in VMs and / or Kubernetes).

 NOTICE, SkyWalking 8.0+ uses [v3 protocols](docs/en/protocols/README.md). They are incompatible with previous releases.

 # Downloads
 Please head to the [releases page](https://skywalking.apache.org/downloads/) to download a release of Apache SkyWalking.

 # Compiling project
 Follow this [document](docs/en/guides/How-to-build.md).

 # Code of conduct
 This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code.
 Please follow the [REPORTING GUIDELINES](CODE_OF_CONDUCT.md#reporting-guidelines) to report unacceptable behavior.

 # Live Demo
 Find the [demo](https://skywalking.apache.org/#demo) and [screenshots](https://skywalking.apache.org/#arch) on our website.

 **Video on youtube.com**

 [![RocketBot UI](http://img.youtube.com/vi/mfKaToAKl7k/0.jpg)](http://www.youtube.com/watch?v=mfKaToAKl7k)

 # Contact Us
 * Mail list: **dev@skywalking.apache.org**. Mail to `dev-subscribe@skywalking.apache.org`, follow the reply to subscribe the mail list.
 * Join `skywalking` channel at [Apache Slack](http://s.apache.org/slack-invite). If the link is not working, find the latest one at [Apache INFRA WIKI](https://cwiki.apache.org/confluence/display/INFRA/Slack+Guest+Invites).
 * Twitter, [ASFSkyWalking](https://twitter.com/ASFSkyWalking)
 * QQ Group: 901167865(Recommended), 392443393
 * [bilibili B站 视频](https://space.bilibili.com/390683219)

 # Our Users
 Hundreds of companies and organizations use SkyWalking for research, production, and commercial product.
 Visit our [website](http://skywalking.apache.org/#users) to find the user page.


 # Landscapes

 <p align="center">
 <br/><br/>
 <img src="https://landscape.cncf.io/images/left-logo.svg" width="150"/>&nbsp;&nbsp;<img src="https://landscape.cncf.io/images/right-logo.svg" width="200"/>
 <br/><br/>
 SkyWalking enriches the <a href="https://landscape.cncf.io/landscape=observability-and-analysis&license=apache-license-2-0">CNCF CLOUD NATIVE Landscape.</a>

 </p>

 <p align="center">
 <a href="https://openapm.io"><img src="https://openapm.io/static/media/openapm_logo.svg" width="100"/></a>
   <br/>Our project enriches the <a href="https://openapm.io">OpenAPM Landscape!</a>
 </p>

 # License
 [Apache 2.0 License.](LICENSE)
	Apache SkyWalking
	==========

	<img src="http://skywalking.apache.org/assets/logo.svg" alt="Sky Walking logo" height="90px" align="right" />

	SkyWalking: an APM(application performance monitor) system, especially designed for
	microservices, cloud native and container-based (Docker, Kubernetes, Mesos) architectures.

	[![GitHub stars](https://img.shields.io/github/stars/apache/skywalking.svg?style=for-the-badge&label=Stars&logo=github)](https://github.com/apache/skywalking)
	[![Twitter Follow](https://img.shields.io/twitter/follow/asfskywalking.svg?style=for-the-badge&label=Follow&logo=twitter)](https://twitter.com/AsfSkyWalking)

	[![Maven Central](https://img.shields.io/maven-central/v/org.apache.skywalking/apache-skywalking-apm.svg)](http://skywalking.apache.org/downloads/)
	[![CI/IT Tests](https://github.com/apache/skywalking/workflows/CI%20AND%20IT/badge.svg?branch=master)](https://github.com/apache/skywalking/actions?query=workflow%3ACI%2BAND%2BIT+event%3Aschedule+branch%3Amaster)
	[![E2E Tests](https://github.com/apache/skywalking/workflows/E2E/badge.svg?branch=master)](https://github.com/apache/skywalking/actions?query=branch%3Amaster+event%3Aschedule+workflow%3AE2E)

	# Abstract
	SkyWalking is an open source APM system, including monitoring, tracing, diagnosing capabilities for distributed system
	in Cloud Native architecture.
	The core features are following.

	- Service, service instance, endpoint metrics analysis
	- Root cause analysis. Profile the code on the runtime
	- Service topology map analysis
	- Service, service instance and endpoint dependency analysis
	- Slow services and endpoints detected
	- Performance optimization
	- Distributed tracing and context propagation
	- Database access metrics. Detect slow database access statements(including SQL statements)
	- Alarm
	- Browser performance monitoring
	- Infrastructure(VM, network, disk etc.) monitoring
	- Collaboration across metrics, traces, and logs

	<img src="http://skywalking.apache.org/assets/frame-v8.jpg?u=20201105"/>

	SkyWalking supports to collect telemetry (metrics, traces, and logs) data from multiple sources
	and multiple formats,
	including
	1. Java, .NET Core, NodeJS, PHP, and Python auto-instrument agents.
	1. Go and C++ SDKs.
	1. LUA agent especially for Nginx, OpenResty and Apache APISIX.
	1. Browser agent.
	1. Service Mesh Observability. Control panel and data panel.
	1. Metrics system, including Prometheus, OpenTelemetry, Spring Sleuth(Micrometer), Zabbix.
	1. Logs.
	1. Zipkin v1/v2 trace.(No Analysis)

	SkyWalking OAP is using the STAM(Streaming Topology Analysis Method) to analysis topology in the tracing based agent scenario
	for better performance. Read [the paper of STAM](https://wu-sheng.github.io/STAM/) for more details.

	# Documentation
	- [Official documentation](https://skywalking.apache.org/docs/)
	- [The paper of STAM](https://wu-sheng.github.io/STAM/), Streaming Topology Analysis Method.
	- [Blog](https://skywalking.apache.org/blog/2020-04-13-apache-skywalking-profiling/) about Use Profiling to Fix the Blind Spot of Distributed Tracing
	- [Blog](https://skywalking.apache.org/blog/2020-12-03-obs-service-mesh-with-sw-and-als/) about observing Istio + Envoy service mesh with ALS solution.
	- [Blog](https://skywalking.apache.org/blog/obs-service-mesh-vm-with-sw-and-als/) about observing Istio + Envoy service mesh with ALS Metadata-Exchange mechanism (in VMs and / or Kubernetes).

	NOTICE, SkyWalking 8.0+ uses [v3 protocols](docs/en/protocols/README.md). They are incompatible with previous releases.

	# Downloads
	Please head to the [releases page](https://skywalking.apache.org/downloads/) to download a release of Apache SkyWalking.

	# Compiling project
	Follow this [document](docs/en/guides/How-to-build.md).

	# Code of conduct
	This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code.
	Please follow the [REPORTING GUIDELINES](CODE_OF_CONDUCT.md#reporting-guidelines) to report unacceptable behavior.

	# Live Demo
	Find the [demo](https://skywalking.apache.org/#demo) and [screenshots](https://skywalking.apache.org/#arch) on our website.

	Video on youtube.com

	[![RocketBot UI](http://img.youtube.com/vi/mfKaToAKl7k/0.jpg)](http://www.youtube.com/watch?v=mfKaToAKl7k)

	# Contact Us
	* Mail list: dev@skywalking.apache.org. Mail to `dev-subscribe@skywalking.apache.org`, follow the reply to subscribe the mail list.
	* Join `skywalking` channel at [Apache Slack](http://s.apache.org/slack-invite). If the link is not working, find the latest one at [Apache INFRA WIKI](https://cwiki.apache.org/confluence/display/INFRA/Slack+Guest+Invites).
	* Twitter, [ASFSkyWalking](https://twitter.com/ASFSkyWalking)
	* QQ Group: 901167865(Recommended), 392443393
	* [bilibili B站视频](https://space.bilibili.com/390683219)

	# Our Users
	Hundreds of companies and organizations use SkyWalking for research, production, and commercial product.
	Visit our [website](http://skywalking.apache.org/#users) to find the user page.


	# Landscapes

	<p align="center">
	<br/><br/>
	<img src="https://landscape.cncf.io/images/left-logo.svg" width="150"/>  <img src="https://landscape.cncf.io/images/right-logo.svg" width="200"/>
	<br/><br/>
	SkyWalking enriches the <a href="https://landscape.cncf.io/landscape=observability-and-analysis&license=apache-license-2-0">CNCF CLOUD NATIVE Landscape.</a>

	</p>

	<p align="center">
	<a href="https://openapm.io"><img src="https://openapm.io/static/media/openapm_logo.svg" width="100"/></a>
	<br/>Our project enriches the <a href="https://openapm.io">OpenAPM Landscape!</a>
	</p>

	# License
	[Apache 2.0 License.](LICENSE)