[ndnSIM] How to disable the CS cache?

[Chengyu Fan]

Thanks, Alex.

On Wed, Mar 6, 2013 at 9:36 PM, Alex Afanasyev <alexander.afanasyev at ucla.edu
> wrote:

> I this case, I would recommend using ns3::ndn::cs::Freshness::* content
> store implementations.  You can see details how freshness is handled in
> https://github.com/NDN-Routing/ndnSIM/blob/master/model/cs/custom-policies/freshness-policy.h
>
>
> The currently implemented way treats Freshness=0s as an unset value, but
> you can easily modify this behavior.
>
> ---
> Alex
>
> On Mar 6, 2013, at 7:00 PM, Chengyu Fan <chengyu at cs.colostate.edu> wrote:
>
>
>
> On Wed, Mar 6, 2013 at 5:05 PM, Alex Afanasyev <
> alexander.afanasyev at ucla.edu> wrote:
>
>> Freshness would work only if you're using a CS version that honors
>> content freshness (
>> http://ndnsim.net/cs.html#content-stores-respecting-freshness-field-of-contentobjects
>> )
>>
>> If you want completely disable caching (not per specific packet), then
>> you can set
>>
>> ndnHelper.SetContentStore ("ns3::ndn::cs::Lru", "MaxSize", "1");
>>
>>
>> 1 is the minimum value that you can set currently.  Would it be
>> sufficient?  If not, it is possible to implement a non-caching "content
>> store".  Let me know.
>>
>
> For now, I can generate the required result without setting the content
> freshness.
> But I may need it someday. Could you please tell me which file implements
> the caching behavior?
>
> Thanks,
> Chengyu
>
>
>>
>> --
>> Alex
>>
>> On Mar 6, 2013, at 3:54 PM, Chengyu Fan <chengyu at cs.colostate.edu> wrote:
>>
>> Hi
>>
>> I want to do a experiment with no CS cache. For example, set the
>> freshness as 0, so the routers would not cache this content.
>> However, when I check the code, I found that setting the Freshness to 0
>> means unlimited freshness:
>>
>> producerHelper.SetAttribute ("Freshness", TimeValue (Seconds (0))); //
>> unlimited freshness
>>
>> So is there a way to let routers not cache the content?
>>
>> Another question: does anyone know how many Attributes we can set? And
>> what kind of format? Can we add new attributes?
>>
>> Thanks,
>> Chengyu
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>>
>>
>>
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