[MacPorts] #53117: Braeburn POST requests (Trac, Mailman) are unreliable

[MacPorts]

#53117: Braeburn POST requests (Trac, Mailman) are unreliable
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  Reporter:  mf2k            |      Owner:  admin@…
      Type:  defect          |     Status:  closed
  Priority:  Normal          |  Milestone:
 Component:  server/hosting  |    Version:
Resolution:  fixed           |   Keywords:
      Port:                  |
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Comment (by ryandesign):

 I also still see the problem occasionally, maybe once or twice every few
 days. It's annoying when it happens after I've just written a new ticket,
 because I can't just click the Back button and click Submit again, because
 the first time I clicked Submit, it was disabled with JavaScript
 (presumably to prevent an errant double–click from causing two tickets to
 be created, something we used to see before Trac had this feature).

 It surprises me that the error occurs instantly. When other servers are
 busy, the behavior I usually see is that my request is attempted for
 several seconds at least before the server drops the connection.

 Would some sort of per-IP rate-limiting configuration be another solution?
 Start delaying requests if too many come from the same IP address? Or
 would that be ineffective for spiders—do they send requests from a large
 number of IP addresses simultaneously?

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Ticket URL: <https://trac.macports.org/ticket/53117#comment:19>
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