[Nfd-dev] Fwd: How to evict a specific item from the content store(nfd:cs)

[小杰许]

---------- Forwarded message ----------
From: 小杰许 <xujunjie1221 at gmail.com>
Date: 2018-02-02 14:53 GMT+08:00
Subject: Re: [Nfd-dev] How to evict a specific item from the content
store(nfd:cs)
To: Junxiao Shi <shijunxiao at email.arizona.edu>


Thanks for your reply!
1、I want to design a central controller to manage all the edge nodes, and
the replacement policy should be decided by the central controller after
received a tag, which including a item name.

2、NFD itself calling this. in forwarder.cpp

3、erasing one entry, under the same prefix

4、I  convers the name.at(-1).toUri into uint64_t, then put the uint64_t
item into a Tag. So the calling process doesn't know the whole data name
cause I find the Tag can only be used in int type.

Thanks, I really need this function of cs but I still can't solve it until
now.



2018-01-30 19:21 GMT+08:00 Junxiao Shi <shijunxiao at email.arizona.edu>:

> Hi Junjie
>
> Cs::erase remains unimplemented because there's no use case for that, but
> it's going to come in a few months. Use the "Watch" button on
> https://redmine.named-data.net/issues/4318 to get notified, and be
> patient.
>
> Since the above issue is still in design stage, it would be nice for you
> to describe your use case. Your answers will help the assignee to improve
> the design.
> * Why do you want to erase specific Data?
> * What's the calling process? NFD itself (which module?) or an application?
> * Are you erasing one entry, or multiple entries under the same prefix?
> * Does the calling process knows the exact Data name(s)?
> You may answer these questions by REPLY-ALL to this email, or post them on
> Redmine.
>
> Yours, Junxiao
> ------------------------------
> From: 小杰许 <xujunjie1221 at gmail.com>
> Sent: ‎1/‎28/‎2018 21:00
> To: nfd-dev at lists.cs.ucla.edu
> Subject: [Nfd-dev] How to evict a specific item from the content
> store(nfd:cs)
>
> Hello all,
>
> When I tried to use the erase( ) function to remove an item, I found
> out that the method is not implemented.  I checked the code from the
> documentation and found out that this is indeed the case. And I found that the eviction is happening in cache policy like cs-policy-lru.cpp when a new item is coming.
>
> So how am I supposed to evict a specific item from the Content Store? I mean evict a specific item by its name(prefix) in the cs.
>
> Thanks,
>
> JunjieXu
>
>
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