- A web communication technique in which a client repeatedly sends requests to a server at regular, fixed intervals to check for new data, with the server immediately responding whether new data is available. If no new data exists, the server returns an empty or unchanged response, and the client waits for the next interval before sending another request. The approach is simpler to implement than long polling but generates more network traffic and server load.
- Related terms: Long polling, Polling, Server side, Client side
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