Redirect on specific threshold !!

[Valentin V. Bartenev]

On Sunday 14 June 2015 22:12:37 shahzaib shahzaib wrote:
> Hi,
> 
>    We're using Nginx to serve videos on one of our Storage server(contains
> mp4 videos) and due to high amount of requests we're planning to have a
> separate caching Node based on Fast SSD drives to serve "Hot" content in
> order to reduce load from Storage. We're planning to have following method
> for caching :
> 
> If there are exceeding 1K requests for http://storage.domain.com/test.mp4 ,
> nginx should  construct a Redirect URL for rest of the requests related to
> test.mp4 i.e http://cache.domain.com/test.mp4 and entertain the rest of
> requests for test.mp4 from Caching Node while long tail would still be
> served from storage.
> 
> So, can we achieve this approach with nginx or other like varnish ?
> 
[..]

You can use limit_conn and limit_req modules to set limits:
http://nginx.org/en/docs/http/ngx_http_limit_conn_module.html
http://nginx.org/en/docs/http/ngx_http_limit_req_module.html

and the error_page directive to construct the redirect.

  wbr, Valentin V. Bartenev