Re: [Storagesync] Storagesync Digest, Vol 5, Issue 1

["Fei Song" <[e-mail]>]

Hi Markus,

Thanks. now I can roughly understand what is inside the remoteStorage or other similar schemes.
It would be great if we can see more details when you have time :) 

--------------
Fei Song
>Hello Fei, see my response to Lihui Sun.
>
>On Mon, Dec 07, 2015 at 10:38:08AM +0800, Fei Song wrote:
>> Hi Markus,
>> 
>> So, in remoteStorage, what should be stored at the both client and server side?
>> Etags or metadata or metadata history or other things?
>> based on the draft, it seems that only Etag is enough, but the context in this mailing list confused me...
>> 
>> 
>> 
>> 
>> Fei Song
>> 
>> From: Markus Unterwaditzer
>> Date: 2015-12-07 05:54
>> To: Ted Lemon
>> CC: storagesync
>> Subject: Re: [Storagesync] Storagesync Digest, Vol 5, Issue 1
>> Etags are *much* simpler to implement on the server side than the WebDAV sync
>> protocol because they do not require the server to keep sync tokens and
>> metadata history. Note that the server has to keep metadata of *deleted* files
>> to correctly implement WebDAV's sync protocol. Etags are less efficient in
>> terms of network usage of course, but that's the tradeoff to be made.
>> 
>> I don't know what you mean with the last sentence.
>> 
>> On Sun, Dec 06, 2015 at 06:26:54PM +0000, Ted Lemon wrote:
>> > Sunday, Dec 6, 2015 12:39 PM Markus Unterwaditzer wrote:
>> > > What do you mean by "it"? ETags are simpler to implement than the above RFC,
>> > > and ETags are also required in WebDAV.
>> > 
>> > Etags are not really much simpler than a metadata versioning sync protocol, and they are a lot less efficient.   Having to fetch the whole directory for every directory that contains a change is expensive, both for the server and the client, unless changes are infrequent.   And because the server is the sole source of truth, it's a lot more fragile.
>> > 
>> > 
>> > --
>> > Sent from Whiteout Mail - https://whiteout.io
>> > 
>> > My PGP key: https://keys.whiteout.io/[e-mail]
>> 
>> 
>> 
>> > _______________________________________________
>> > Storagesync mailing list
>> > [e-mail]
>> > https://www.ietf.org/mailman/listinfo/storagesync
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Storagesync mailing list
>> [e-mail]
>> https://www.ietf.org/mailman/listinfo/storagesync
>
>> _______________________________________________
>> Storagesync mailing list
>> [e-mail]
>> https://www.ietf.org/mailman/listinfo/storagesync
>
>_______________________________________________
>Storagesync mailing list
>[e-mail]
>https://www.ietf.org/mailman/listinfo/storagesync