正如《ZeroMQ》一书中所说:“ZMQ的PUB-SUB模式提供了一种简单而强大的方式来实现分布式系统中的消息广播。” 2.2 使用ZMQ的polling机制 (Using ZMQ’s Polling Mechanism) ZMQ提供了自己的polling机制,允许开发者在多个ZMQ套接字上等待事件。这种机制在某种程度上是基于异步I/O的,因为你可以在多个套接字上等待,而...
Long polling is itself not a true push; long polling is a variation of the traditionalpollingtechnique, but it allows emulating a push mechanism under circumstances where a real push is not possible. 长轮询不是真正的push,long polling 是传统polling的变体。但是它模拟了push机制,在真正的push不可能...
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Connection pooling:Maintaining a pool of reusable connections instead of creating a new connection for every request can improve the efficiency of the long polling mechanism. This eliminates the overhead of establishing a new connection for each request, resulting in better performance. ...
The terminology in this area is also varied. We can call the method of interrupting functionspolling,yieldingorsafepoints. Safepoints refers to the polling mechanism as well as the point in the program where the poll is found, and also some other concepts about metadata about compiled code. ...
(a) data-in. (b) status. (c) command. (d) data-out. When a program makes a request for I/O what happens to the processor? What mechanism is used to tell the processor that the IO is finished? Fill in the blank: To avoid _...
The HTTP streaming mechanism is based on the capability of the server to send several pieces of information in the same response, without terminating the request or the connection. This result can be achieved by both HTTP/1.1 and HTTP/1.0 servers. ...
In one aspect of the disclosure, a mechanism to improve performance of receive queue polling by user processes is disclosed. In one embodiment, the polling is performed on a plurality of receive queues (memory locations) located in RAM of a receiving node/host. In one variant, the mechanism ...
In one embodiment, a Pollmatic Iframe225is integrated into a Visualforce page, or other page. The Pollmatic Iframe, in one embodiment, includes a robust Javascript polling mechanism that continually asks the polling service/server if something has changed on the application server. One skilled in...
Ideally, the reconnection mechanism would use the "online" and "offline" events to understand whether/when the connection can be reestablished, but retrying in a loop is also fine. Minimal reproducible example This can be reproduced with a current Vaadin starter that is configured to use websocke...