[Nfd-dev] Can ndn-tool(chunks) use the cached data on the intermediate node?

[Klaus Schneider]

Hi everyone,

@Junxiao: I agree that in-network caching is no replacement for a 
producer. But you didn't answer Junjie's question why catchunks failed 
in this example.

Theoretically, if all the chunks are in the cache, there's no need for 
the producer to be running.


@Junjie: Please provide more details on the error, such as your commands 
and the console output. (We have told you this multiple times now).

My guess is that it has something to do with catchunks version 
discovery, which requires the consumer to run. So it may be possible to 
fix it by disabling the version discovery.

Best regards,
Klaus




On 17/03/18 04:38, Junxiao Shi wrote:
> Hi Junjie
> 
> Almost all NDN applications can use cached data.
> In-network caching is not a replacement of producer. You must keep the 
> producer running at all times.
> Having in-network caching allows consumers to retrieve data with lower 
> latency, and reduces the workload of a producer (you can measure it: 
> number of Interests arriving at producer node is less than number of 
> Interests expressed by all consumers combined).
> 
> Yours, Junxiao
> 
> On Sat, Mar 17, 2018 at 07:28 小杰许 <xujunjie1221 at gmail.com 
> <mailto:xujunjie1221 at gmail.com>> wrote:
> 
>     Greeting all, I'm wondering if the tool "chunks" can get the cached
>     data.
> 
>     My topo is like client- caching node (with max cache_size)- server.
>     Then I run the ndnputchunks in server. run the ndncatchunks in
>     client. The client can get the total data. (I think the data has
>     been cached in the caching node). Then I close the ndnputchunks in
>     server, and run the ndncatchunks again, however, it failed, Does it
>     mean the tool(chunks) don't support  on-path cache？
> 
>     Yours，
>     Junjie
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