Merge pull request #10248 from tigercl/chore/readme

chore: update readme

README-CN.md

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 [![YouTube](https://img.shields.io/badge/Subscribe-EMQ%20中文-FF0000?logo=youtube)](https://www.youtube.com/channel/UCir_r04HIsLjf2qqyZ4A8Cg)
 
 
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-[English](./README.md) | 简体中文 | [русский](./README-RU.md)
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 EMQX 是一款全球下载量超千万的大规模分布式物联网 MQTT 服务器，单集群支持 1 亿物联网设备连接，消息分发时延低于 1 毫秒。为高可靠、高性能的物联网实时数据移动、处理和集成提供动力，助力企业构建关键业务的 IoT 平台与应用。
 
 EMQX 自 2013 年在 GitHub 发布开源版本以来，获得了来自 50 多个国家和地区的 20000 余家企业用户的广泛认可，累计连接物联网关键设备超过 1 亿台。

README.md

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 [![YouTube](https://img.shields.io/badge/Subscribe-EMQ-FF0000?logo=youtube)](https://www.youtube.com/channel/UC5FjR77ErAxvZENEWzQaO5Q)
 
 
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-English | [简体中文](./README-CN.md) | [русский](./README-RU.md)
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 EMQX is the world's most scalable open-source MQTT broker with a high performance that connects 100M+ IoT devices in 1 cluster, while maintaining 1M message per second throughput and sub-millisecond latency.
 
 EMQX supports multiple open standard protocols like MQTT, HTTP, QUIC, and WebSocket. It’s 100% compliant with MQTT 5.0 and 3.x standard, and secures bi-directional communication with MQTT over TLS/SSL and various authentication mechanisms.