Syntax: uwsgi_cache_lock on | off; Default: uwsgi_cache_lock off; Context: http, server, location
This directive appeared in version 1.1.12.
When enabled, only one request at a time will be allowed to populate a new cache element identified according to the uwsgi_cache_key directive by passing a request to a uwsgi server. Other requests of the same cache element will either wait for a response to appear in the cache or the cache lock for this element to be released, up to the time