[ndnSIM] Cache hits/misses on producer node

Spyridon (Spyros) Mastorakis mastorakis at CS.UCLA.EDU
Thu Apr 14 10:10:28 PDT 2016


I am not sure I fully understand your question, but I will try to elaborate on it a little bit and you will let me know whether my response answers your question.

A producer in ndnSIM is a node that has an application installed and running on it. To this end, it has a Contest Store like any other node. If the producer sends out some data packets, they will be in its CS in the near future. If some consumers request this data, but the Interest is forwarded to the producer through a path that is disjoint with the previous path, then the data will be served from the CS on the producer node.

Does that answer your question?


Spyridon (Spyros) Mastorakis
Personal Website: http://cs.ucla.edu/~mastorakis/ <http://cs.ucla.edu/~mastorakis/>
Internet Research Laboratory
Computer Science Department

> On Apr 14, 2016, at 2:33 AM, Hassan Sinky <sinkyh at oregonstate.edu> wrote:
> Hello everyone,
> I was just wondering what could be some cases when a producer node would register a cache hit? I assumed that if an interest request were to arrive at a producer it would simply process that request by returning the corresponding data. I have a topology with multiple producers of the same prefix and I installed the CS tracer only on the producers. I also have consumers requesting the prefix provided by the producers. The CS trace on the producers is registering cache hits and misses. Why would there be a hit or a miss? Should both simply be zero? Or am I missing something?
> Thanks!

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