BOOL, can be read and
set, but not
Forces the request to be treated as a cache miss regardless of whether we have a copy of the object in cache.
Setting this in
vcl_recv differs from
return(pass) in that Request collapsing is performed when "Always miss" is set, allowing simultaneous requests for the same object to be collapsed into a single request to origin. In contrast, when using pass mode, request collapsing is disabled.
When enabled, this mode also makes stale objects unusable, thereby disabling the effects of the
Try it out
req.hash_always_miss is used in the following code examples. Examples apply VCL to real-world use cases and can be deployed as they are, or adapted for your own service. See the full list of code examples for more inspiration.
Click RUN on a sample below to provision a Fastly service, execute the code on Fastly, and see how the function behaves.
Early expiry of cached objects
Cached a large number of objects for too long and want to update and shorten their TTLs.