Public bug reported:

It looks like requests to the remote server time out more often than we
care to admit. When that happens, we treat the failure as a temporary
and surprising error and disable remote server access for two hours.

We need something more sophisticated so we can react to timeout errors
with a different strategy than to other temporary surprising errors. The
problem is that a dead server is indistinguishable from a slow one, so
we probably need some exponential back-off strategy, or count the number
of consecutive timeout failures and trigger the full two-hour back-off
only if some threshold is exceeded.

** Affects: thumbnailer (Ubuntu)
     Importance: High
     Assignee: Michi Henning (michihenning)
         Status: New

** Changed in: thumbnailer (Ubuntu)
     Assignee: (unassigned) => Michi Henning (michihenning)

** Changed in: thumbnailer (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1528105

Title:
  Error back-off too aggressive

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