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# SRS(Simple Realtime Server)
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[](https://github.com/ossrs/srs/actions?query=workflow%3ACodeQL+branch%3Adevelop)
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[](https://github.com/ossrs/srs/actions/workflows/release.yml?query=workflow%3ARelease)
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[](https://github.com/ossrs/srs/actions?query=workflow%3ATest+branch%3Adevelop)
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[](https://codecov.io/gh/ossrs/srs/branch/develop)
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[](../../wikis/Contact#wechat)
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[](https://github.com/ossrs/srs/issues/2716)
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[](http://mulanos.cn)
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[](https://alternativeto.net/software/srs/about/)
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[](https://www.facebook.com/winlinvip)
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[](https://twitter.com/winlinvip)
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[](https://www.youtube.com/channel/UCP6ZblCL_fIJoEyUzZxC1ng)
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[](https://www.twitch.tv/winlinvip)
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[](https://discord.gg/yZ4BnPmHAd)
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[](https://opencollective.com/srs-server/contribute)
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[](https://stackoverflow.com/questions/tagged/simple-realtime-server)
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SRS/5.0，[Bee](https://github.com/ossrs/srs/wiki/Product#release50) 是一个简单高效的实时视频服务器，支持RTMP/WebRTC/HLS/HTTP-FLV/SRT。
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SRS/5.0 is a simple, high efficiency and realtime video server, supports RTMP/WebRTC/HLS/HTTP-FLV/SRT.
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SRS is licenced under [MIT](https://github.com/ossrs/srs/blob/develop/LICENSE), but some depended libraries are distributed using their [own licenses](https://github.com/ossrs/srs/wiki/LicenseMixing).
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[](https://gitee.com/winlinvip/srs-wiki/raw/master/images/SRS-Overview-4.0.png)
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> Note: If image load fail, please see it at [here](https://www.processon.com/view/link/619f29791efad425fd699fd2).
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<a name="product"></a>
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<a name="usage-docker"></a>
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## Usage
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Build SRS from source or **docker([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#docker) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#docker))**, please read **Wiki: Gettting Started([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#getting-started) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#getting-started))**:
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```
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git clone -b develop https://gitee.com/ossrs/srs.git &&
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cd srs/trunk && ./configure && make && ./objs/srs -c conf/srs.conf
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```
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Open [http://localhost:8080/](http://localhost:8080/) to check it, then publish
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by [FFmpeg](https://ffmpeg.org/download.html) or [OBS](https://obsproject.com/download) as:
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```bash
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ffmpeg -re -i ./doc/source.flv -c copy -f flv -y rtmp://localhost/live/livestream
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```
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> Note: It's also able to [publish by H5](http://localhost:8080/players/rtc_publisher.html?autostart=true) if WebRTC is enabled.
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Play the following streams by [players](https://ossrs.net):
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* RTMP (by [VLC](https://www.videolan.org/)): rtmp://localhost/live/livestream
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* H5(HTTP-FLV): [http://localhost:8080/live/livestream.flv](http://localhost:8080/players/srs_player.html?autostart=true&stream=livestream.flv&port=8080&schema=http)
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* H5(HLS): [http://localhost:8080/live/livestream.m3u8](http://localhost:8080/players/srs_player.html?autostart=true&stream=livestream.m3u8&port=8080&schema=http)
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* H5(WebRTC): [webrtc://localhost/live/livestream](http://localhost:8080/players/rtc_player.html?autostart=true)
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<a name="srs-40-wiki"></a>
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<a name="wiki"></a>
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From here, please read wikis:
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* [Getting Started](https://github.com/ossrs/srs/wiki/v4_EN_Home#getting-started), please read Wiki first.
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* [中文文档：起步](https://github.com/ossrs/srs/wiki/v4_CN_Home#getting-started)，不读Wiki一定扑街，不读文档请不要提Issue，不读文档请不要提问题，任何文档中明确说过的疑问都不会解答。
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Fast index for Wikis:
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* Overview? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home), [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home))
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* How to deliver RTMP streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleRTMP), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleRTMP))
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* How to build RTMP Edge-Cluster?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleRTMPCluster), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleRTMPCluster))
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* How to build RTMP Origin-Cluster?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleOriginCluster), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleOriginCluster))
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* How to deliver HTTP-FLV streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleHttpFlv), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleHttpFlv))
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* How to deliver HLS streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleHLS), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleHLS))
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* How to deliver low-latency streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleRealtime), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleRealtime))
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* How to use WebRTC? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_WebRTC), [EN](https://github.com/ossrs/srs/wiki/v4_EN_WebRTC))
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Other important wiki:
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* Usage: How to delivery DASH(Experimental)?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleDASH), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleDASH))
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* Usage: How to transode RTMP stream by FFMPEG?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleFFMPEG), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleFFMPEG))
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* Usage: How to delivery HTTP FLV Live Streaming Cluster?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleHttpFlvCluster), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleHttpFlvCluster))
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* Usage: How to ingest file/stream/device to RTMP?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleIngest), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleIngest))
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* Usage: How to forward stream to other servers?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleForward), [EN](https://github.com/ossrs/srs/wiki/v4_EN_SampleForward))
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* Usage: How to improve edge performance for multiple CPUs? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_REUSEPORT), [EN](https://github.com/ossrs/srs/wiki/v4_EN_REUSEPORT))
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* Usage: How to file a bug or contact us? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_Contact), [EN](https://github.com/ossrs/srs/wiki/v4_EN_Contact))
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## AUTHORS
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Thank you to all our contributors! 🙏
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[](https://opencollective.com/srs-server/contribute)
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> Note: You may provide financial support for this project by donating [via Open Collective](https://opencollective.com/srs-server/contribute). Thank you for your support!
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The [TOC(Technical Oversight Committee)](trunk/AUTHORS.md#toc) and [contributors](trunk/AUTHORS.md#contributors):
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* [Winlin](https://github.com/winlinvip): Focus on [ST](https://github.com/ossrs/state-threads) and [Issues/PR](https://github.com/ossrs/srs/issues).
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* [ZhaoWenjie](https://github.com/wenjiegit): Focus on [HDS](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_DeliveryHDS) and [Windows](https://github.com/ossrs/srs/issues/2532).
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* [ShiWei](https://github.com/runner365): Focus on [SRT](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_SRTWiki) and [H.265](https://github.com/ossrs/srs/issues/465).
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* [XiaoZhihong](https://github.com/xiaozhihong): Focus on [WebRTC/QUIC](https://github.com/ossrs/srs/issues/2091) and [SRT](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_SRTWiki).
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* [WuPengqiang](https://github.com/Bepartofyou): Focus on [H.265](https://github.com/ossrs/srs/issues/465).
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* [XiaLixin](https://github.com/xialixin): Focus on [GB28181](https://github.com/ossrs/srs/issues/1500).
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* [LiPeng](https://github.com/lipeng19811218): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_WebRTC).
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* [ChenGuanghua](https://github.com/chen-guanghua): Focus on [WebRTC/QoS](https://github.com/ossrs/srs/issues/2051).
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* [ChenHaibo](https://github.com/duiniuluantanqin): Focus on [GB28181](https://github.com/ossrs/srs/issues/1500) and [API](https://github.com/ossrs/srs/issues/1657).
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A big `THANK YOU` also goes to:
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* All [contributors](trunk/AUTHORS.md#contributors) of SRS.
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* All friends of SRS for [big supports](https://github.com/ossrs/srs/wiki/Product).
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* [Genes](http://sourceforge.net/users/genes), [Mabbott](http://sourceforge.net/users/mabbott) and [Michael Talyanksy](https://github.com/michaeltalyansky) for [st](https://github.com/ossrs/state-threads/tree/srs).
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## Releases
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* 2021-12-19, Release [v4.0-b1](https://github.com/ossrs/srs/releases/tag/v4.0-b1), v4.0-b1, 4.0 beta1, v4.0.206, 144126 lines.
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* 2021-12-01, Release [v4.0-b0](https://github.com/ossrs/srs/releases/tag/v4.0-b0), v4.0-b0, 4.0 beta0, v4.0.201, 144022 lines.
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* 2021-11-15, Release [v4.0.198](https://github.com/ossrs/srs/releases/tag/v4.0.198), 4.0 dev8, v4.0.198, 144010 lines.
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* 2021-11-02, Release [v4.0.191](https://github.com/ossrs/srs/releases/tag/v4.0.191), 4.0 dev7, v4.0.191, 143890 lines.
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* 2021-10-12, Release [v4.0.177](https://github.com/ossrs/srs/releases/tag/v4.0.177), 4.0 dev6, v4.0.177, 143686 lines.
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* 2021-09-05, Release [v4.0.161](https://github.com/ossrs/srs/releases/tag/v4.0.161), 4.0 dev5, v4.0.161, 145865 lines.
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* 2021-08-15, Release [v4.0.156](https://github.com/ossrs/srs/releases/tag/v4.0.156), 4.0 dev4, v4.0.156, 145490 lines.
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* 2021-08-14, Release [v4.0.153](https://github.com/ossrs/srs/releases/tag/v4.0.153), 4.0 dev3, v4.0.153, 145506 lines.
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* 2021-08-07, Release [v4.0.150](https://github.com/ossrs/srs/releases/tag/v4.0.150), 4.0 dev2, v4.0.150, 145289 lines.
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* 2021-07-25, Release [v4.0.146](https://github.com/ossrs/srs/releases/tag/v4.0.146), 4.0 dev1, v4.0.146, 144026 lines.
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* 2021-07-04, Release [v4.0.139](https://github.com/ossrs/srs/releases/tag/v4.0.139), 4.0 dev0, v4.0.139, 143245 lines.
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* 2020-06-27, [Release v3.0-r0](https://github.com/ossrs/srs/releases/tag/v3.0-r0), 3.0 release0, 3.0.141, 122674 lines.
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* 2020-02-02, [Release v3.0-b0](https://github.com/ossrs/srs/releases/tag/v3.0-b0), 3.0 beta0, 3.0.112, 121709 lines.
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* 2019-10-04, [Release v3.0-a0](https://github.com/ossrs/srs/releases/tag/v3.0-a0), 3.0 alpha0, 3.0.56, 107946 lines.
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* 2017-03-03, [Release v2.0-r0](https://github.com/ossrs/srs/releases/tag/v2.0-r0), 2.0 release0, 2.0.234, 86373 lines.
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* 2016-08-06, [Release v2.0-b0](https://github.com/ossrs/srs/releases/tag/v2.0-b0), 2.0 beta0, 2.0.210, 89704 lines.
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* 2015-08-23, [Release v2.0-a0](https://github.com/ossrs/srs/releases/tag/v2.0-a0), 2.0 alpha0, 2.0.185, 89022 lines.
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* 2014-12-05, [Release v1.0-r0](https://github.com/ossrs/srs/releases/tag/v1.0-r0), all bug fixed, 1.0.10, 59391 lines.
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* 2014-10-09, [Release v0.9.8](https://github.com/ossrs/srs/releases/tag/v0.9.8), all bug fixed, 1.0.0, 59316 lines.
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* 2014-04-07, [Release v0.9.1](https://github.com/ossrs/srs/releases/tag/v0.9.1), live streaming. 30000 lines.
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* 2013-10-23, [Release v0.1.0](https://github.com/ossrs/srs/releases/tag/v0.1.0), rtmp. 8287 lines.
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* 2013-10-17, Created.
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## Features
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Please read [FEATURES](trunk/doc/Features.md#features).
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<a name="history"></a>
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<a name="change-logs"></a>
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## Changelog
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Please read [CHANGELOG](trunk/doc/CHANGELOG.md#changelog).
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## Compare
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Comparing with other media servers, SRS is much better and stronger, for details please
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read Product([CN](https://github.com/ossrs/srs/wiki/v4_CN_Compare)/[EN](https://github.com/ossrs/srs/wiki/v4_EN_Compare)).
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## Performance
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Please read [PERFORMANCE](trunk/doc/PERFORMANCE.md#performance).
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## Architecture
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Please read [ARCHITECTURE](trunk/doc/Architecture.md#architecture).
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## Ports
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Please read [PORTS](trunk/doc/Resources.md#ports).
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## APIs
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Please read [APIS](trunk/doc/Resources.md#apis).
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## Mirrors
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Please read [MIRRORS](trunk/doc/Resources.md#mirrors).
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Beijing, 2013.10<br/>
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Winlin
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