.NETCORE 如何使用Redis进行消息订阅和发布

创建RedisMessagePublisher和RedisMessageSubscriber。RedisMessagePublisher用于发布消息到指定的频道，而RedisMessageSubscriber用于订阅频道并处理接收到的消息

using StackExchange.Redis;
using System;

public class RedisMessagePublisher
{
private readonly IConnectionMultiplexer _redis;
private readonly ISubscriber _subscriber;

public RedisMessagePublisher(string connectionString)
{
_redis = ConnectionMultiplexer.Connect(connectionString);
_subscriber = _redis.GetSubscriber();
}

public void PublishMessage(string channel, string message)
{
_subscriber.Publish(channel, message);
}
}

public class RedisMessageSubscriber
{
private readonly IConnectionMultiplexer _redis;
private readonly ISubscriber _subscriber;

public RedisMessageSubscriber(string connectionString)
{
_redis = ConnectionMultiplexer.Connect(connectionString);
_subscriber = _redis.GetSubscriber();
}

public void SubscribeToChannel(string channel, Action<string> messageHandler)
{
_subscriber.Subscribe(channel, (redisChannel, value) => messageHandler(value));
}
}

在发布消息时，你可以调用PublishMessage方法，传递频道和消息内容。例如：

string redisConnectionString = "your-redis-connection-string";
string channel = "your-channel";
string message = "Hello, subscribers!";

var publisher = new RedisMessagePublisher(redisConnectionString);
publisher.PublishMessage(channel, message);

在订阅消息时，你可以调用SubscribeToChannel方法，并提供频道和一个处理消息的回调函数。当有新消息到达时，回调函数将被触发并传递接收到的消息内容。例如：

string redisConnectionString = "your-redis-connection-string";
string channel = "your-channel";

var subscriber = new RedisMessageSubscriber(redisConnectionString);
subscriber.SubscribeToChannel(channel, (message) =>
{
Console.WriteLine("Received message: " + message);
// 在这里处理接收到的消息
});

请确保替换示例中的your-redis-connection-string和your-channel为实际的Redis连接字符串和频道名称。