Slide 32
Slide 32 text
Distributed systems
“Users in Romania are complaining
that all push notifications have been
down for days. This seems
impossible, since we share a queue
with them."
“Disney is complaining that once in a
while, but not always, they don’t see
the profile photo they expected to see
— they see someone else’s photo!
When they refresh, it’s fixed.”
“Sometimes a bot takes off, or an app
is featured on the iTunes store, and it
takes us a long time to track down
which app or user is generating
disproportionate pressure on shared
system components.
“We run a platform, and it’s hard to
programmatically distinguish
between errors that users are
inflicting on themselves and problems
in our code, since they all manifest as
errors or timeouts."