Hi,
I would like to propose a simple and "well-known" procedure to generate
"unique" id for network applications:
1) id = official ip + pid (process id) + timestamp (sec. resolution enough) +
global counter
2) id = pid + timestamp + global counter
1) is unique for all running bearerboxes at least in your private ip address
range.
Descr.: Official ip is a unique idendifier against other hosts, pid +
timestamp protect from a case if bearerbox crached too oft...
2) is unique for all running bearerboxes on the same machine.
I would preffer 1) so we never have any problems with every possible
configuration...
On Friday 22 August 2003 13:43, Stipe Tolj wrote:
> Hi list,
>
> currently bearerbox acts like:
> whenever an SMS is passed to the store-file it get's an incrementaly
> counted ID and then stored.
>
> It is desirable (for several purposes) to have unique IDs for messages
> coming in (SM-MO), hence when entering the system from SMSC side and
> when leaving to the HTTP (application server) side, and of course vise
> versa.
>
> Hence, I'd like to discuss how we can acchive uniqueness of IDs
> accross even several parallel running bearerbox instances on one box.
>
> From our perspective there are two ideas:
>
> * heuristical: assume that a constructed ID = timestamp + sender +
> receiver + counter is unique accross all instances.
>
> * ID pool caching: which means there is a thread in bearerbox with a
> ID queue. The queues in several concurrent bearerbox processes are
> distinct, which means the thread has to garantee whereever he obtains
> a pool of IDs, that those are assign only to himself.
>
> Option 1 is of course simpler to do. Option 2 is *stronger* in the
> sense of high-load systems and consistancy.
>
> Any thoughs for this?
>
> BTW, I'd also like to add the SMS ID to the access.log. Any
> objecttions here?
>
> Stipe
>
> [EMAIL PROTECTED]
> -------------------------------------------------------------------
> Wapme Systems AG
>
> Vogelsanger Weg 80
> 40470 D�sseldorf
>
> Tel: +49-211-74845-0
> Fax: +49-211-74845-299
>
> E-Mail: [EMAIL PROTECTED]
> Internet: http://www.wapme-systems.de
> -------------------------------------------------------------------
> wapme.net - wherever you are
--
Best regards / Mit besten Gr��en aus D�sseldorf
Dipl.-Ing.
Alexander Malysh
___________________________________
Centrium GmbH
Vogelsanger Weg 80
40470 D�sseldorf
Fon: +49 (0211) 74 84 51 80
Fax: +49 (0211) 277 49 109
email: a.malysh at centrium.de
web: http://www.centrium.de
msn: olek2002 at hotmail.com
icq: 98063111
___________________________________________
Please avoid sending me Word or PowerPoint attachments.
See http://www.fsf.org/philosophy/no-word-attachments.html
