Nathan Stanford wrote:
>>-----Original Message-----
>>From: Jochem van Dieten [mailto:[EMAIL PROTECTED]]
>>Sent: Thursday, July 25, 2002 9:54 AM
>>To: CF-Talk
>>Subject: Re: NEW (ColdFusion MX or ColdFusion 4.5) and
>>Session Variables
>>( Bug)
>>
>>
>>We have 2 instances of this template running at the same time. At the
>>time the first instance reaches Point 1, the second instance reaches
>>Point 2 and grabs the lock to update the value. Will the
>>first instance
>>display 0 for session.cartquantity or not?
>
> Yes.... at Point 1 it is always Zero...
But it can be changed by the other instance. Let's make a little timeline:
Instance 1, first submit: Instance 2, refresh:
1 init cfapplication
2 set session vars to 0
3 init cfapplication
4 do queries
5 set session vars to 0
6 display session vars
7 do queries
8 update session vars by 1
9 display session vars
10 loop
11 update session vars by 1
12 display session vars
13 loop
14 update session vars by 1
15 display session vars
16 exit
17 update session vars by 1
18 loop
Output: Output:
0 1
2 3
At point 9, the outputted value will not be the 0 that is set at point
5, but it will be the 0 that is set at point 5 + the 1 that was added at
point 8 by the other template. Just like the session vars displayed at
point 12 have been modified by the update at point 11.
Jochem
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