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Added a comment: re: long polling

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https://www.google.com/accounts/o8/id?id=AItOawmz8d2M0lQDYWLSbDQSjYRHfrQkWKgPu60 2014-01-17 20:27:40 +00:00 • committed by admin
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doc/design/assistant/blog/day_45__long_polling/comment_5_b3e41ba77f21e93a4e086483793bf5ce._comment Normal file
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[[!comment format=mdwn
username="https://www.google.com/accounts/o8/id?id=AItOawmz8d2M0lQDYWLSbDQSjYRHfrQkWKgPu60"
nickname="Alex"
subject="re: long polling"
date="2014-01-17T20:27:23Z"
content="""
After poking through git-annex, I had the same realization. I hadn't realized that Yesod (or perhaps more accurately, Warp) is asynchronous above the Application level. I had feared I'd need to write some WAI middleware to accommodate the blocking nature of long polling requests. In retrospect it seems kind of silly: what kind of high-performance webserver doesn't handle requests concurrently?
I do still think there's a pattern worth encapsulating, even if it won't be long until WebSockets and SSE are widespread enough to be developed against without fallbacks.
"""]]