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

[Linhui Sun <[e-mail]>]

2015-12-05 13:47 GMT+08:00 Ted Lemon <[e-mail]>:

> Saturday, Dec 5, 2015 12:28 AM Linhui Sun wrote:
> > I'm not very familiar with the distributed peer model (I view it as p2p,
> > please correct me if I am wrong). From the example you have provided
> > previously, it seems that it works fine with 2 participants. But I don't
> > know whether it works well when multiple participants are willing to
> share
> > a file/folder. I'm asking this question since we need to know which model
> > should the iss probably employ.
>
> The distributed peer model simply means that there is no server.   There
> are only instances of the database.   Any instance can be modified, and the
> changes will be propagated to other instances when they sync.   A change
> made on one instance may propagate to another instance through a third
> instance.
>
> Importantly, this avoids the situation where the metadata is lost on the
> server, and as a consequence the data is all removed from the client.
>  Since there is no server, and no client, but only peers, neither peer is
> considered authoritative, so a metadata loss on either peer can result in a
> safe recovery without data loss.
>
> In practice, in most cases there will be one or more instances that are
> treated as servers, and then one or more that are treated more as clients,
> but now you can have two or three "servers" and it doesn't matter which one
> the "client" syncs to; the new information will propagate to the other two
> "servers."
>
It sounds like this could resolve your IMAP issue to some extent. I'm
wondering could we understand this in another way for the practical
application: we have a group of servers and a group of clients. Inside the
group of servers, they use a explicit distributed peer model and any new
info will be propagated to the group members. Between the server group and
client group, it is simply C/S model but a client can sync to arbitrary one
from the server group. However inside the group of clients, they have no
communications since I don't want my client to talk to anyone else.

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