发布后未触发 dotnet core 订阅者答案

【问题标题】：dotnet core Subscriber is not being triggered after Publishing发布后未触发 dotnet core 订阅者
【发布时间】：2022-04-17 20:52:26
【问题描述】：

我正在 Dotnet 核心中的 Redis(StackExchange.Redis) PUBSUB 系统上工作，一切正常，直到我发布到我的频道。订阅者永远不会被触发。

这是我的代码：

program.cs

public static void Main(string[] args)
        {
            _ = RunConsumer();
            BuildWebHost(args).Run();
        }

        private static async Task RunConsumer()
        {
            LogWriter logger = new LogWriter();
            IEnvironment envProvider = new EnvironmentProvider();

            try
            {
                ICache cache = new Cache(envProvider);
                IDataRepository dataRepo = new DatabaseRepository();
                PubBusiness publisher = new PubBusiness();
                await publisher.ImportData();
            }
            catch (Exception ex)
            {
                await logger.WriteLogErrorAsync($"Exception occurred", ex);
                Environment.Exit(-1);
            }
        }

出版商

// ... code that creates my key

// add my data to a batch and save it to redis
batchTasks.Add(batch.ListRightPushAsync("jobs", key));
batch.Execute();
Task.WaitAll(batchTasks.ToArray());

// publishing
ISubscriber sub = _connection.GetSubscriber();
await sub.PublishAsync("uploaded", key);

订阅者

var db = _connection.GetDatabase();
ISubscriber sub = _connection.GetSubscriber();

// it will never pass here
            await sub.SubscribeAsync("uploaded", async (channel, value) =>
            {
                var key = (await db.ListLeftPopAsync("jobs")).ToString();
               // do my stuff here
            });

【问题讨论】：

标签： .net-core redis publish-subscribe stackexchange.redis subscribe

【解决方案1】：

默认禁用消息传递，点击链接了解详情但是如果很短，只需在 redis cli 中输入此命令即可启用所有：

CONFIG SET notify-keyspace-events KEA

https://redis.io/docs/manual/keyspace-notifications/#configuration

【讨论】：