tree 277572925380ec1e1ff31daf2ab1a2df9e032c4f
parent bcf6b11a347303960003970614d1556c73bde4ae
author Roman Arutyunyan <arut@nginx.com> 1416407603 +0300
committer Roman Arutyunyan <arut@nginx.com> 1416407603 +0300

Upstream: different header lists for cached and uncached requests.

The upstream modules remove and alter a number of client headers
before sending the request to upstream.  This set of headers is
smaller or even empty when cache is disabled.

It's still possible that a request in a cache-enabled location is
uncached, for example, if cache entry counter is below min_uses.
In this case it's better to alter a smaller set of headers and
pass more client headers to backend unchanged.  One of the benefits
is enabling server-side byte ranges in such requests.