I am using part of the request_body as the Cache_key in setting up the Proxy_cache_key and I was wondering how the actual lookup / matching of the Cache would occur?

From the documentation, it looks like it's a MD5 encryption of the Cache Key that I set.

Does that mean the cache_key lookup would be done after constructing the cache key for the Incoming request? Is it possible that it would try to do a lookup with the default URI first and failover to construct the cache key??

Context of asking this is I am seeing some inconsistency in the Cache Hit Serving time for huge size of request_body Params even though when it's served from the cache.