✨ 添加英文 README_EN.md

README.md

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 ---
 
+简体中文 | [English](README_EN.md)
+
 `mica-mqtt` **低延迟**、**高性能**的 `mqtt` 物联网组件。更多使用方式详见： **mica-mqtt-example** 模块。
 
 [**迁移到 mica-mqtt 2.1.x**](docs/update.md)

README_EN.md

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+# 🌐 mica mqtt
+[![Java CI](https://github.com/lets-mica/mica-mqtt/workflows/Java%20CI/badge.svg)](https://github.com/lets-mica/mica-mqtt/actions)
+![JAVA 8](https://img.shields.io/badge/JDK-1.8+-brightgreen.svg)
+[![Mica Maven release](https://img.shields.io/nexus/r/https/oss.sonatype.org/net.dreamlu/mica-mqtt-codec.svg?style=flat-square)](https://mvnrepository.com/artifact/net.dreamlu/mica-mqtt-codec/)
+[![Mica-mqtt maven snapshots](https://img.shields.io/nexus/s/https/oss.sonatype.org/net.dreamlu/mica-mqtt-codec.svg?style=flat-square)](https://oss.sonatype.org/content/repositories/snapshots/net/dreamlu/mica-mqtt-codec/)
+
+[![star](https://gitee.com/596392912/mica-mqtt/badge/star.svg?theme=dark)](https://gitee.com/596392912/mica-mqtt/stargazers)
+[![GitHub Repo stars](https://img.shields.io/github/stars/lets-mica/mica-mqtt?label=Github%20Stars)](https://github.com/lets-mica/mica-mqtt)
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/30dad82f79f34e41bafbc3cef6b68fc3)](https://www.codacy.com/gh/lets-mica/mica-mqtt/dashboard?utm_source=github.com&utm_medium=referral&utm_content=lets-mica/mica-mqtt&utm_campaign=Badge_Grade)
+[![GitHub](https://img.shields.io/github/license/lets-mica/mica-mqtt.svg?style=flat-square)](https://github.com/lets-mica/mica-mqtt/blob/master/LICENSE)
+
+---
+
+English | [简体中文](README.md)
+
+`mica-mqtt` is a **low-latency** and **high-performance** `mqtt` Internet of Things component. For more usage details, please refer to the **mica-mqtt-example** module.
+
+## 🍱 Use Cases
+
+- Internet of Things (cloud-based MQTT broker)
+- Internet of Things (edge messaging communication)
+- Group IM
+- Message push
+- Easy-to-use MQTT client
+
+## 🚀 Advantages
+- Ordinary yet not monotonous, simple yet not lackluster.
+- Manual transmission (more conducive to secondary development or expansion).
+- A newborn calf; infinite possibilities.
+
+## ✨ Features
+- [x] Support for MQTT v3.1, v3.1.1, and v5.0 protocols.
+- [x] Support for WebSocket MQTT sub-protocol (compatible with mqtt.js).
+- [x] Support for HTTP REST API, see [HTTP API Documentation](docs/http-api.md) for details.
+- [x] Support for MQTT client.
+- [x] Support for MQTT server.
+- [x] Support for MQTT Will messages.
+- [x] Support for MQTT Retained messages.
+- [x] Support for custom message (MQ) processing and forwarding to achieve clustering.
+- [x] MQTT client Alibaba Cloud MQTT connection demo.
+- [x] Support for GraalVM compilation into native executable programs.
+- [x] Support for rapid access to Spring Boot projects.
+- [x] Support for integration with Prometheus + Grafana for monitoring.
+- [x] Cluster implementation based on Redis pub/sub, see [mica-mqtt-broker module](mica-mqtt-broker) for details.
+
+## 🌱 To-do
+
+- [ ] Optimize the processing of MQTT sessions and support v5.0
+- [ ] Implement rule engine based on easy-rule + druid sql parsing.
+
+## 🚨 Default Ports
+
+| Port | Protocol        | Description                      |
+| ---- | --------------- | -------------------------------- |
+| 1883 | tcp             | MQTT TCP port                    |
+| 8083 | http, websocket | HTTP API and WebSocket MQTT port |
+
+**Demo Address**: mqtt.dreamlu.net, same ports.
+
+## 📦️ Dependencies
+
+### Spring Boot Project
+**Client:**
+```xml
+<dependency>
+  <groupId>net.dreamlu</groupId>
+  <artifactId>mica-mqtt-client-spring-boot-starter</artifactId>
+  <version>${mica-mqtt.version}</version>
+</dependency>
+```
+
+**Configuration Details**: [mica-mqtt-client-spring-boot-starter Documentation](starter/mica-mqtt-client-spring-boot-starter/README.md)
+
+**Server:**
+```xml
+<dependency>
+  <groupId>net.dreamlu</groupId>
+  <artifactId>mica-mqtt-server-spring-boot-starter</artifactId>
+  <version>${mica-mqtt.version}</version>
+</dependency>
+```
+
+**Configuration Details**: [mica-mqtt-server-spring-boot-starter Documentation](starter/mica-mqtt-server-spring-boot-starter/README.md)
+
+### Non-Spring Boot Project
+
+### Client
+```xml
+<dependency>
+  <groupId>net.dreamlu</groupId>
+  <artifactId>mica-mqtt-client</artifactId>
+  <version>${mica-mqtt.version}</version>
+</dependency>
+```
+
+**Configuration Details**: [mica-mqtt-client Documentation](mica-mqtt-client/README.md)
+
+### Server
+```xml
+<dependency>
+  <groupId>net.dreamlu</groupId>
+  <artifactId>mica-mqtt-server</artifactId>
+  <version>${mica-mqtt.version}</version>
+</dependency>
+```
+
+**Configuration Details**: [mica-mqtt-server Documentation](mica-mqtt-server/README.md)
+
+## 📝 Documentation
+- [Introduction to MQTT, mqttx, and mica-mqtt **Video**](https://b23.tv/VJ8yc7v)
+- [Getting Started with mica-mqtt](example/README.md)
+- [jfinal-mica-mqtt-client Documentation](starter/jfinal-mica-mqtt-client/README.md)
+- [jfinal-mica-mqtt-server Documentation](starter/jfinal-mica-mqtt-server/README.md)
+- [mica-mqtt HTTP API Documentation](docs/http-api.md)
+- [Frequently Asked Questions about mica-mqtt Usage](https://gitee.com/596392912/mica-mqtt/issues/I45GO7)
+- [mica-mqtt Release Versions](CHANGELOG.md)
+- [MQTT Protocol Documentation](https://github.com/mcxiaoke/mqtt)
+
+## 💡 References
+- [Netty Codec MQTT](https://github.com/netty/netty/tree/4.1/codec-mqtt)
+- [jmqtt](https://github.com/Cicizz/jmqtt)
+- [iot-mqtt-server](https://gitee.com/recallcode/iot-mqtt-server)
+- [Netty MQTT Client](https://github.com/jetlinks/netty-mqtt-client)
+
+## 🏗️ MQTT Client Tools
+- [Mqttx: An Elegant Cross-platform MQTT 5.0 Client Tool](https://mqttx.app/)
+- [MQTT WebSocket Debugging](http://tools.emqx.io/)
+- [MQTT.fx MQTT Client](http://mqttfx.org/)
+
+## 🍻 Open Source Recommendations
+- `Avue`: A Vue-based configurable front-end framework: [https://gitee.com/smallweigit/avue](https://gitee.com/smallweigit/avue)
+- `Pig`: Microservice framework featured on CCTV (architectural essential): [https://gitee.com/log4j/pig](https://gitee.com/log4j/pig)
+- `SpringBlade`: Enterprise-level solution (essential for enterprise development): [https://gitee.com/smallc/SpringBlade](https://gitee.com/smallc/SpringBlade)
+- `smart-mqtt`: High-performance MQTT broker (surpassing EMQX): [https://gitee.com/smartboot/smart-mqtt](https://gitee.com/smartboot/smart-mqtt)
+- `IJPay`: Payment SDK, making payment accessible: [https://gitee.com/javen205/IJPay](https://gitee.com/javen205/IJPay)
+- `JustAuth`: The most comprehensive third-party login open-source library ever: [https://github.com/zhangyd-c/JustAuth](https://github.com/zhangyd-c/JustAuth)
+- `spring-boot-demo`: Spring Boot in-depth learning in practice: [https://github.com/xkcoding/spring-boot-demo](https://github.com/xkcoding/spring-boot-demo)
+
+## 💚 Acknowledgements
+Thanks to JetBrains for providing a free open-source license:
+
+[![JetBrains](docs/img/jetbrains.png)](https://www.jetbrains.com/?from=mica-mqtt)
+
+Thanks to **VIP members** of `DreamLuTech` for their strong support. For more **VIP** information, please visit: [https://www.dreamlu.net/vip/index.html](https://www.dreamlu.net/vip/index.html)
+
+## 📱 WeChat
+
+![DreamLuTech](docs/img/dreamlu-weixin.jpg)
+
+**JAVA Architecture Diary**, daily recommended exciting content!