Hi, Varnish people!

I’d like to get fancy with grace stored objects, but I’m not sure how to do 
this. Can I determine if there’s a grace object I could deliver? Basically I 
want my logic to be:

1) If the backend returns a 200, cache and deliver as normal.
2) If the backend returns anything other than a 200, and I have a stale object 
I could serve anyway, serve it.
3) If the backend returns anything other than a 200, restart to redirect to a 
final fallback.


I know how to do #1 and #3, but I’m not sure where/how I can do #2. Is there a 
way of determining if I could fallback to a stale object? If so, any pointers?

— Kevin


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