Re: Filters with multiple copies of pine running

On Tue, 6 Feb 2007, Andrew Morgan wrote:
> On Tue, 6 Feb 2007, Ross wrote:
>> On Tue, 6 Feb 2007, Steve Hubert wrote:
>>> I think we're talking about IMAP folders and Pine.

>> Then there is no possibility of operating a multiuser login 
>> secure system. It will crash. That server must somehow lock 
>> files/records to allow a write or crash for multiuser. A write 
>> is required to create/update any message/file/record.

> In my experience running multiple copies of Pine against the 
> Cyrus IMAP server, Pine instances are only loosely 
> synchronized.  If I delete a message in Pine "A", that change 
> will appear in Pine "B" several minutes later.  I assume the 
> lag depends on the frequency that Pine polls the IMAP server.
>
> The IMAP server itself always maintains a consistent internal 
> view and operations on mailboxes are atomic.

After reading of this & the other two reports on Pine via IMAP, I 
suddenly realize Pine does not operate realtime, certainly 
delayed under IMAP. I wonder how reliable that could be in 
multiuser.

> There is no harm in running multiple instances of Pine, but you can easily 
> get a race condition like the original poster described.

The results of any process then could be unpredictable.

--
RossARR
[email protected]
mrossarr.nixsyspaus.org/
nixsyspaus.org=208.64.38.250
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