[Ndn-interest] Question regarding consistency

aniesh chawla chawla.aniesh at gmail.com
Mon Aug 24 06:12:28 PDT 2015

Hello Everyone,

I have a very basic doubt which I could not resolve while reading
documentation of NDN. I would like to also take this as research topic if
my doubt is valid.

The question is:
How is the consistency of data maintained in the network? Since, NDN is
"pull" based networking and lets say there is change in file version at one
of the node and not in other nodes. I can see the this can be achieved
through NDNFS, but still the other nodes will not have change in version of
the file. So, how will the new node who is requesting for that file will
get to know which version to ask for? If we use NDNS to resolve every such
query and we use time stamp as version then also it should be propagated
throughout the network? I also see that Chrono-sync does something like
this but it has waiting timer for propagation delays. So either NDNS is
talking to every node in the whole network or some other way.

Is my understanding correct or am I missing something here?

Thanks a lot

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