Re: [RFC] unique SMS IDs

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]
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Best regards / Mit besten Grüßen aus Düsseldorf

Dipl.-Ing.
Alexander Malysh
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