On 2/3/20 5:04 PM, Brandon Long wrote:
> 
> I always wanted to lower it, the messages that take longer than a day
> are in the noise, and a lot of time that's because a mailbox is so busy
> that it's on the edge of being able to actually handle the volume, and
> the problem is more one of flow control (twice in two threads, wow)

It's easy to lie (inadvertently) with statistics. If you draw the window
big enough, you can ignore any potential problem as statistical noise.
Basically 100% of the time, messages do go through instantaneously. But
when your office floods and you have to call someone in to replace,
reinstall, and restore the whole thing from backup, now 100% of your
messages are delayed.

You have problems with 100% of messages 0.0001% of the time -- it's not
a steady 99.9999 success rate, even though that's what the numbers look
like if your window is five-years long.

Customers really love hearing that they're not going to lose any mail
when that happens. The rest of the time, yeah, it's a bit long. But
we're not trying to accomodate the one guy who's over quota on a random
Tuesday.

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