Below is a command output example:

varnish> backend.list
Backend name                   Refs   Admin      Probe
webserver01(,,80) 7      probe      Healthy 6/6
webserver02(,,80) 11     probe      Healthy 6/6

My understanding is that it's the number of references to that backend (e.g. set req.backend = foo) from within the VCL.

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  • But he counts this reference while the connection is open? – Tomir Schmite Jr. Jun 10 '15 at 21:15

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