Hi Ted,

I was just having a very similar discussion off-list with someone else.

Where you crawled by a search engine(s) this morning?

These kinds of entries are normal, but an "excessive" amount can point to 
one or two things:

-----------
~~ Search Engines normally do not (or care about) the ability to store 
cookies and the UserReference key used for managing User Scope variables 
is a "session-cookie". Witango typically issues these keys automatically.

So "each page" crawl from an Engine is just like a new visitor to your 
site. Each crawl is typically issued a new UserReference key.

This is normal behavior, and there is nothing wrong with this (other 
platforms like PHP and ASP also use session-cookies this way) - but it's 
also a good reason to not assign too many User Scope variables 
unnecessarily. 

As a rule, I only assign a User Scope variable if I have a "very" good 
reason to.

Note: the same above behavior can also come from robot scripts attacking 
a website.

-----------
~~ The other reason could be that something in your code is preventing 
the Witango server from issuing the keys properly in a managed fashion, 
and the fall back behavior of the Server is to keep issuing new ones (if 
the previous ones are going missing). 

This can happen if you have any custom local$httpHeader variable 
assignments that don't also include <@userreferencecookie>, or use it 
properly.

---
The [Expired], in your logs, comes from when these previously used 
session-cookies go unused for whatever your default expiry time is 
(default is 30 minutes).

Open your log file in a text editor, select one of the expired key values 
lower down in the file - then search "up" to see how many times that key 
was used. This can help point to your problem (if any).

---
Do your Users sometime loose their sessions (User variables)?

Let us know, otherwise I hope this helps. Cheers...

Scott Cadillac,
403-281-6090 ~ [EMAIL PROTECTED]
------------
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Well-formed Programming in C# .NET, Witango, MSIE and XML
------------
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------------


-----Original Message-----
From: Ted Wolfley <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Date: Thu, 4 Mar 2004 13:17:05 -0500 
Subject: Witango-Talk: witango log

> Hi,
>  
> I just restarted the our witango 5.0 service on a windows 2000 server
> because the webpages were slow in coming up.  When I looked into the
> witango
> server log, there were 4801 entries of "[Expired] Variables for key". 
> each
> entry had a different key.  The service was restarted 12:00am this
> morning.
> Are these entries normal and can a build up of userreferences slow down
> the
> server?
>  
> 
> Ted Wolfley 
> Database/Internet Programmer 
> The Ogden Group of Rochester 
> phone: (585) 321 1060 x23 
> fax: (585) 321 0043 
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>  
> 
> www.ogdengroup.com <http://www.ogdengroup.com/> 
> 
>  
> 
> _______________________________________________________________________
> _
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