IF UPGRADING WAS AN OPTION, DON'T YOU THINK...

Actually, comments such as that one are what are driving me to upgrade.
Thanks!  ;)

Chad

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mark
Stanton
Sent: Tuesday, 1 March 2005 12:40 PM
To: CFAussie Mailing List
Subject: [cfaussie] Re: CFCs calling CFCs


Hey Andrew

> What I mean by this is that when a session ID is changed the memory 
> still holds the session variables until expiry, I know I could perhaps

> go and do a kill on these unused session vars.

How do you know that a session variable is unused unless it has expired
without reading a user's mind? By definition session variables should be
considered in use until they expire, at at that point CF marks them as
ready for garbage collection so I wouldn't spend time worrying about
this too much.

The best way to keep memory to a minimum would be to persist the more
complex/large data structures and just store a key in memory so you can
easly fetch them out when you need them. However you would then need
your own garbage collection system to clean out these records from the
DB.

In general I don't like the idea of stuffing lots of stuff into the
session scope. I get especially fustrated when I see multi-step form
processes relying on session scope to store the data from the preceeding
steps.

On another note (and I'm not trying to flame, or start another
upgrade/don't upgrade war) its worth noting that CF7 introduces the idea
of onSessionEnd(), which would allow you to clean any values that have
been persisted temporarily as soon as the session expires.


Cheers

Mark

-- 
Mark Stanton 
Gruden Pty Ltd 
http://www.gruden.com

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