I wanted to count the number of requests to a particular url pattern. Not sure how this is done in NGinx.
Is this possible:
When an request to the url pattern comes, we serve that request first. Then NGinx makes another request asynchronously to a server which counts the impression. NGinx does not wait for the response of this request.
Thanks.
You can use the post_action directive to trigger a sub_request after the main request is complete.
Useful for the sort of logging you have in mind.
** OCT 2016 UPDATE **
The post_action directive has been removed from the Nginx documentation and while it still appears to work, usage is inadvisable. Caveat Emptor!
You may try this module
https://github.com/theromis/ngx_counter_zone
very close to your request