.NET SignalR Redis实时Web应用

以下是一个使用.NET SignalR和Redis作为后端的示例代码，用于创建一个实时的Web应用程序：

首先，安装必要的NuGet包：

Install-Package Microsoft.AspNet.SignalR
Install-Package StackExchange.Redis

然后，配置SignalR和Redis：

// Startup.cs
 
public void Configuration(IAppBuilder app)
{
    // 配置Redis作为Backplane
    var redis = ConnectionMultiplexer.Connect("localhost");
    var resolver = new DefaultDependencyResolver();
    resolver.UseRedis(redHubConnectionId, redis, "SignalR");
 
    // 配置SignalR
    GlobalHost.DependencyResolver = resolver;
    app.MapSignalR<RedisScaleoutConfiguration>("/signalr", new RedisScaleoutConfiguration(redis, "SignalR"));
}
 
public class RedisScaleoutConfiguration : HubConfiguration
{
    private readonly ConnectionMultiplexer _redis;
    private readonly string _redisKey;
 
    public RedisScaleoutConfiguration(ConnectionMultiplexer redis, string redisKey)
    {
        _redis = redis;
        _redisKey = redisKey;
    }
 
    public override IHubConnectionContext<dynamic> Hubs
    {
        get
        {
            var hubContext = GlobalHost.ConnectionManager.GetHubContext<MyHub>();
            return new RedisHubConnectionContext(hubContext, _redis, _redisKey);
        }
    }
}
 
public class RedisHubConnectionContext : IHubConnectionContext<dynamic>
{
    private readonly IHubContext _hubContext;
    private readonly ConnectionMultiplexer _redis;
    private readonly string _redisKey;
 
    public RedisHubConnectionContext(IHubContext hubContext, ConnectionMultiplexer redis, string redisKey)
    {
        _hubContext = hubContext;
        _redis = redis;
        _redisKey = redisKey;
    }
 
    public IEnumerable<HubConnectionContext> Clients => throw new NotImplementedException();
 
    public Task AllExcept(string methodName, object[] args, IList<string> excludeConnectionIds)
    {
        return _hubContext.Clients.AllExcept(methodName, args, excludeConnectionIds);
    }
 
    public Task Client(string clientId,