restart-server has been relatively slow recently, and it'd be nice to
know what it is spending its time doing when it hangs for a few
seconds.
(imported from commit a411c951f5a3f2a1366b6d5d3a40d0660ebec11b)
Since we flush memcached when we do a server restart, the flurry of
get_updates requests that fly in afterwards are all cache misses for
getting the User/UserProfile objects, so Tornado ends up spending
around 70ms per get_updates request rather than the usual 1-2ms.
So this should substantially improve our Tornado performance around
server restarts.
(imported from commit 07b8126bdfd4ff14e4c3362f9eda1fe5fd571c5b)
Our previous code could in theory end up clearing the caches it had
just filled, if Tornado's cache filling work happened to be faster
than the memcached flush.
(imported from commit 48174aadad398fb7a7c917a1df765c1261b12a55)
We create a circular reference between handler functions and our
wrappers for them so that we can pass the wrapper to jQuery.off when
users pass the original handler to us. This reference-counting
system can't break all the circular references we create because
users can unbind event handlers without explicitly naming the
handlers they want to remove (they can remove all bindings on an
element, for example). For now, we hope that this memory leak isn't
too bad.
(imported from commit 9615b5761b4b09ca7ca52c0d847e9b83330373fa)
Previously, we couldn't actually unbind some event handlers. The
problem was that when a user called $.off(events, handler), the
passed handler wouldn't match any that were actually bound because
the handler that was actually bound was our wrapper.
This bug specifically caused the handlers for our idle timers to
never be unbound, effectively never cancelling them.
(imported from commit 48efac954994a05c356d326e64a78ab0ace9fe3e)
We will need this for removing event handlers. This will
unfortunately create a memory leak, but we'll partially deal with
that later.
(imported from commit e439cb44d245e16d2254d1be053b68015a1f4c79)
Sometimes Dropbox shares with /s/ and sometimes with /sh/,
and I'm not sure which controls it, but we should deal with both.
(imported from commit 2222450f25c418b5fbd60ab2c30477467e34c0d1)
Previously, if for some reason pointer updates were not returning from
the server, the client would resend its request every second, rather
than waiting for the previous request to fail before sending a new
one.
(imported from commit d134adc50aabd135c7631913fecab3519aca6640)
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)
This is required because our migration is going to go in two phases.
When we do the database migration (on pushing to master), we update
all messages at that point. But prod doesn't know about the new
flags field, so any new messages sent on prod will not have the
read bit set.
When we push to prod, we want to re-run the bit of the migration script
that automatically sets read flags on messages older than the users's
pointer.
(imported from commit 961d33e972eac9ada80089bf1b1269c7fb42d56b)
We also needed this when rerendering on append, so moving it into
_maybe_rerender allows the two places to share the code.
(imported from commit 027d99cae7864747cf1ec94c95e8ece495b5c907)
This avoids our repeatedly retrying to fetch a tweet that doesn't
exist from the Twitter API.
(imported from commit b4ca1060d03da21e7e59e5b99e682d2e8457df15)
It's pretty confusing if this doesn't change. In some other world we
could update the fade, but since we're currently only fading on reply,
I think it would be weird to update the fade when you're picking a new
recipient.
(imported from commit 8f77419d443d578068b57f847354ac6da7632ee2)
Previously, we compared the recipients of messages to the message that
you triggered the reply off of -- even if you did a reply-to-sender.
This commit changes the code to instead track what you faded by,
rather than just the message you faded on.
Fixes#1037.
(imported from commit d9e2cb4122501b1bc45e231d4b52c2e7f9284fdd)
Previously, if you renarrowed, all message fading would be cleared
until you close and then reopen the compose box.
Fixes#1024.
(imported from commit 57981ba29ab597c4c84ca6e4e9d04a8284f49117)
We treat these exceptions the same way we treat fatal errors: report
the error message to our server and then allow the exception to reach
the top level.
We could also override document.onerror, but don't. There are a
couple of ramifications of this:
* Exceptions caused by event handlers directly attached to DOM
elements aren't handled
* Exceptions caused by code at the top level that triggers an error
(such as parse errors in our Javascript files) aren't handled
The reason we don't override document.onerror is because the
document.onerror handler has a limited interface and doesn't receive
the exception object. It only gets the message, file, and line
number of the error. Additionally, exceptions that we allow to
propogate out of blueslip trigger an onerror event when they're never
caught. In order to avoid handling the error twice (once by blueslip
and once by the onerror handler), we'd have to encode the fact that
the error has already been handled in the error message, which is
pretty ugly.
(imported from commit 7f049ae519dc198a9f7cfd41fd5dd18e584bd061)
Waseem Daher
Leo Franchi
Tim Abbott
Zev Benjamin