Stale-While-Revalidate or Similar

Michael Borejdo mib at electronic-minds.de
Tue Mar 20 10:24:02 CET 2012


Hello List,

Is there support for something like "stale-while-revalidate" coming to Varnish?
I need to make the request to my backend-servers async and serve slightly stale content (defined by grace) and I do not want a user to wait for the backend at any time.
Or is there any other way with using vcl trickery to accomplish this?
(Unfortunately I cannot seem to find any info on this topic and the thread I found on the list has not been answered)  [1]

[1] https://www.varnish-cache.org/lists/pipermail/varnish-misc/2012-February/021644.html

Thanks

Michael
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