Prevent varnish from deleting its entire cache(obj.lastuse)

[Fredrik Kristiansen]

Hi,

I'm trying to prevent varnish from deleting its entire cache when full, so I
have added this to our VCL confguration:

sub vcl_discard {
    # Keep objects in use last 5 minutes
    if (obj.lastuse > 300) {
        discard;
    }

    keep;
}

But variable obj.lastuse don't seem to be available and varnish won't start
with this script.

Fredrik Kristiansen
Nettby.no <http://nettby.no/>
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