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https://www.pubnub.com/blog/http-long-polling/
Dec 01, 2014 · In a Nutshell: HTTP Long Polling To overcome this deficiency, Web app developers can implement a technique called HTTP long polling, where the client polls the server requesting new information. The server holds the request open until new data is available. Once available, the server responds and sends the new information.Founder: Stephen Blum, Todd Greene
https://dzone.com/articles/websockets-vs-long-polling
Long polling is implemented on the back of XMLHttpRequest, which is near-universally supported by devices so there’s usually little need to support further fallback layers.
https://stackoverflow.com/questions/59398357/does-cherrypy-support-long-polling-enabled-paths-in-its-servers-well
However, I noticed that Cherrypy does support multiple threads. I'm not sure what it can or can't do compared to Tornado. My use case is like this: The frontend will request long-polling to the backend to see if there is any new members update. Such updates are not frequent.
https://medium.com/system-design-blog/long-polling-vs-websockets-vs-server-sent-events-c43ba96df7c1
Apr 09, 2019 · Long Polling: As in regular polling, rather than having to repeat this process multiple times for every client until new data for a given client becomes available, Long polling is …
http://www.dsheiko.com/weblog/websockets-vs-sse-vs-long-polling
May 12, 2012 · Works in many ways as long-polling, unless SSE doesn’t need to close connection every time when response is sent The best possible solution. Server has the only process serving any requests. No loops, memory/CPU expense per client, but per client action: Client-loading Depends on implementation, though it always an asynchronous process.
https://www.quora.com/What-is-long-polling-in-a-web-framework
With long polling, the client requests information from the server in a similar way to a normal poll. However, if the server does not have any information available for the client, instead of sending an empty response, the server holds the request and waits for some information to be available.
https://en.wikipedia.org/wiki/Long_polling
With long polling, the client requests information from the server exactly as in normal polling, but with the expectation the server may not respond immediately. If the server has no new information for the client when the poll is received, instead of sending an empty response, the server holds the request open and waits for response information to become available.
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