The client in turn sends another request after a predetermined interval (poll interval) and this process continues until there is an update from the server.
客户机根据预定的时间间隔(轮询间隔)依次发送另一个请求，继续这个过程，直至服务器中有一个更新。
Every consumer receives a copy of every message automatically without having to request or poll the topic for new messages.
每个消费者将自动接收每条消息的副本，无需请求或对主题进行轮询以获得新消息。
A client can poll a server, using a request - reply protocol to extract information.
客户端可以通过请求-应答协议轮询服务器，以获得信息。
应用推荐