[Varnish] #1139: default_keep makes objects stay around too long

[Varnish]

#1139: default_keep makes objects stay around too long
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 Reporter:  martin    |       Owner:  phk
     Type:  defect    |      Status:  new
 Priority:  normal    |   Milestone:
Component:  varnishd  |     Version:  trunk
 Severity:  normal    |  Resolution:
 Keywords:            |
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Comment (by martin):

 From discussion during bugwash 2013-09-16:
 * Remove the -1 being treated as default logic from the TTL routines
 * Set up new objects with the default values as part of the initial TTL
 set up

 This should give us the least surprising behavior, where change of default
 values will never affect existing objects.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1139#comment:2>
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