On Fri, 22 Jun 2007, Raymond Wan wrote:
> Hi Gareth,
>
> Gareth Kirwan wrote:
>>> I see, thanks! I was thinking of global variables or even <%init>
>>> blocks to set and store variables, but each request (even within a
>>> single persistent connection by the same client) is
>>> independent and no
>>> variable can exist across requests?
>>>
>>
>> Remember that your solutions need to be scalable.
>> That means that if you get busy you might end up using multiple backend
>> processes, if you're not already (most likely).
>> You may even end up with fastcgis on separate servers, with multiple web
>> servers in front of them.
>>
>> All of this means that you're unlikely to get the same perl process serving
>> this user the second time they make a request.
>>
>
>
> Yes, and I guess that is why the global variable I was using sometimes
> worked and sometimes didn't. By chance, I sometimes got the same Perl
> process. This has been an observation by at least one other person in
> recent weeks...
>
> One of those things that make newbies like me go "huh?". :-)
>
>
>> The direction I'm currently in favour of is using memcached for short term
>> variable storage, rather than a database.
>>
>
> I see. I'll look into that option but a whole database does seem
> overkill. Thank you!
CGI::Session (and I think Apache::Session os the mod_perl equivalent)
may be useful here.
:)
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