[Varnish] #537: Sticky director

Varnish varnish-bugs at projects.linpro.no
Wed Aug 5 13:10:32 CEST 2009

#537: Sticky director
 Reporter:  rts       |        Owner:  phk              
     Type:  defect    |       Status:  new              
 Priority:  low       |    Milestone:  After Varnish 2.1
Component:  varnishd  |      Version:  trunk            
 Severity:  normal    |   Resolution:                   
 Keywords:            |  
Comment (by rts):

 Yes, it's for failover.  I could do this in VCL, but for various
 application-level reasons, we'd prefer to minimise the number of
 transitions we do.  So, if we stuck to B, then only fail to A when B
 fails, we'd have half the number of transitions than if we were to go A-B
 when A fails then straight back to A when A is available again.

 However, if there's a way of having persistent variables in VCL, then even
 this logic could be implemented.

Ticket URL: <http://varnish.projects.linpro.no/ticket/537#comment:2>
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