I was wondering if it's possible to let Varnish to cache based on Backend
server response header?
For example, if Backend response header has "cache_ttl = 60", then Varnish
will cache it for 60 seconds.
If the cache_ttl = 0 or is not exist in Backend, Varnish will not cache
for that object at all.
This is how varnish works by default - it respects the max-age,
Cache-Control fields and Expires headers.
You can override it in vcl_fetch by changing the beresp.ttl. For example:
if (beresp.ttl < 5m) {
set beresp.ttl = 5m;
}
rr
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