tree 1425006b8569fe3059667742d484933ec9c0e7e5
parent c48387e586ed0970c315280b56e75a8d8308c385
author Roman Arutyunyan <arut@nginx.com> 1495717079 +0300
committer Roman Arutyunyan <arut@nginx.com> 1495717079 +0300

Background subrequests for cache updates.

Previously, cache background update might not work as expected, making client
wait for it to complete before receiving the final part of a stale response.
This could happen if the response could not be sent to the client socket in one
filter chain call.

Now background cache update is done in a background subrequest.  This type of
subrequest does not block any other subrequests or the main request.