Funny you should ask this.
 
 We just had a bad experience of this on our live server where previous 
developers had coded each logged in user to store a DataTable (using .NET) 
object into a session. The DataTable object was a couple of hundred KiloBytes 
and the session life was set to 1 hour. The live website could of had 50 
simulateous users, and most of them close the browser when finishing with the 
site - so you can image that if in an hour period over 500 peopel access the 
site, and one hell of large chunk of data sitting in memory. This was causing 
chaos with the website, and was causing the IIS service to restart itself on a 
very frequently basis during one day (this killed all current user sessions).
 
 Be wary of what you store in sessions and of the duration for which they stay 
on the server. I know I probs had the worse case scenario, but still it can 
happen
    
 -----Original Message-----
 From: [EMAIL PROTECTED]
 To: php-windows@lists.php.net
 Sent: Wed, 4 Apr 2007 3.34PM
 Subject: Re: [PHP-WIN] Sessions?
 
  Hey Gustav 
 
 It depends so much on how much data you store in the session variables, what 
kind of storage you run (database or files and so on) and how many users you 
have, so it's really hard to say. 
 In my experience, sessions have very little impact on the server how ever long 
you set them to live. 
 
 Mike 
 
 Gustav Wiberg wrote: 
 > Hi there! 
 > 
 > How much impact on the server have sessions based on the length of minutes 
 > (seconds) that I change to? I just wonder if someone out there has > Any 
 > experience of this or know a place on the web that describes this...? 
 > 
 > Best regards 
 > /Gustav Wiberg 
 > 
 > 
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