Vary header and cache_key

Guilherme guilherme.e at
Thu Oct 8 18:16:03 UTC 2015


Before Nginx 1.7.7, the file name in a cache was a result of applying the
MD5 function to the cache_key.

Now the file name, when Vary header is present in a response of the proxied
request, is not the MD5 of the cache_key anymore.

The above requests generate two different cache files (response header
include *Vary: Accept-Encoding*):

curl -H 'Accept-Encoding: gzip'

*proxy_cache_key: *$scheme://$http_host$uri$is_args$args

How is calculated the file name in this case?


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