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aondio/Serve from cache only if backend is not healthy

Created February 13, 2020 08:17
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Serve from cache only if backend is not healthy
import std;
sub vcl_recv {
if (!std.healthy(req.backend_hint)) {
set req.grace = 4h;
}
sub vcl_backend_response {
# Do not have grace for healthy backends
set beresp.grace = 0s;
}
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