《Redis Stream：实现消息队列的生产消费》（843）
### Redis Stream：实现消息队列的生产消费 📨🔍
在现代分布式系统中，消息队列是解耦生产者和消费者的核心组件之一。Redis 5.0推出的**Stream**数据结构，为轻量级消息队列场景提供了高性能解决方案。本文将带你快速上手Redis Stream的生产消费模型！
---
#### 🌟 **Stream核心特性**
1. **消息持久化**
Stream通过`XADD`命令写入消息，默认持久化到内存（可配置AOF/RDB备份），避免消息丢失风险。
```bash
XADD mystream * user "Alice" action "login"
```
`*`表示自动生成消息ID，格式为`<时间戳>-<序列号>`。
2. **消费者组模式**
通过`XGROUP CREATE`创建消费者组，实现**负载均衡**和**竞争消费**：
```bash
XGROUP CREATE mystream mygroup $ MKSTREAM
```
多个消费者可同时监听同一组，每条消息仅被组内一个消费者处理。
---
#### ⚡ **生产消费实战**
- **生产者示例**（Python）
```python
import redis
r = redis.Redis()
r.xadd("mystream", {"data": "Hello, Redis!\
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