python - Redis 和套接字仅发送给某些客户端

Question

我在 node.js 中有一个这样的服务器:

socket.on('connection', function(client) {
        const subscribe = redis.createClient(6379, '127.0.0.1')

        subscribe.psubscribe('kitchen_*');

        subscribe.on("pmessage", function(pattern, channel, message) {
            client.emit(channel, message);
            log('msg', "received from channel #" + channel + " : " + message);
        });
});

在客户端我有这样的:

socket.on('kitchen_companyName', function (data) {
        console.log('received a message: ', data);
      });

现在我只想在客户端接收 kitchen_companyName 的消息，但即使公司名称是 kitchen_hello 我也会收到消息。我正在使用 pyredis 从 python 发布到 redis。

r = redis.StrictRedis(host='localhost', port=6379)
r.publish('kitchen_'+request.user.user_company, message)

Answer 1

您可以尝试添加一个条件来检查 channel 并仅向该 channel 发送，

subscribe.on("pmessage", function(pattern, channel, message) {
    if(channel == "kitchen_companyName") {
      client.emit(channel, message);
      log('msg', "received from channel #" + channel + " : " + message);
    }
});