A digest of the cache key.

Fastly writes this header into responses. It is proprietary to Fastly.

When Fastly-Debug is present in a request, this header is attached to the response and contains a hash of the cache key created in the vcl_hash subroutine.

User contributed notes


Do you see an error in this page? Do have an interesting use case, example or edge case people should know about? Share your knowledge and help people who are reading this page! (Comments are moderated; for support, please contact