It's closer to a presence query than an update, and more importantly
this moves this out of Tornado -- previously Tornado was spending at
least 3ms per recipient on messages sent to the MIT realm fetching all
this data to return back to users. This should save around 100ms per
message sent to a popular stream the MIT realm -- but more
importantly, each such event is 100ms during which Tornado is not
processing other messages.
(imported from commit 134169f0fdcd9f6640fda957edc4a28b07783d8e)
One of Matt Goldstein's comments is that we often make you look
like you're not at your computer, even when you are, just because
you haven't checked Humbug for a while.
While it's important to have this be accurate, right now I think
we err on the side of showing you as not present. So I increased
some of the timeouts in an attempt to fix that.
(imported from commit 9fd8f432e6684ec1b33d1d932f37caa99c627959)
We don't typically have these (see message type, etc.) and removing
them will allow simplifying the code.
(imported from commit fbefb08ee9b08c73f32c8150a6fa1060957aa8ad)
Keegan McAllister
Tim Abbott
Waseem Daher
Leo Franchi