We have the following url we would like to proxy cache:
Query string parameter "parameter" varies between requests. So does "paramater2".
Query stringing parameter r is a timestamp we use to make sure the client doesn't serve cached (on the client side) content. Aka "cache buster". Yes we also use all the appropriate don't cache h headers.
Now, we would like to proxy cache via nginx some of these requests. Is it possible to instruct nginx to ignore the r querystring param but use all the others when setting a cache key for the entry? If we can't ignore param r then the nginx proxy cache will be useless as each cache key will be unique.