[metrics-bugs] #30218 [Metrics/CollecTor]: Add bandwidth files archiving to CollecTor

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#30218: Add bandwidth files archiving to CollecTor
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 Reporter:  irl                                  |          Owner:
                                                 |  metrics-team
     Type:  enhancement                          |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Metrics/CollecTor                    |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-bwauth,tor-dirauth,metrics-      |  Actual Points:
  roadmap-2019-q2                                |
Parent ID:  #21378                               |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by irl):

 We are trying to build more robust archiving solutions to avoid missing
 data, and having a window of only a few minutes in which the data is going
 to be available for certain doesn't help towards that goal. We really
 should have a "current" URL that keeps a copy of the bandwidth file that
 was used for at least as long as the consensus is fresh.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30218#comment:2>
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