RE: Witango-Talk: Search Engines & User sessions

[Robert Shubert]

I have 2 thoughts on this issue.   1)       User scopes don’t really do much harm, and use very little memory. Under Witango (5.0-5.5) I have had 10,000+ user variables established on my server without a problem. I use a 60 minute default timeout now (and my clients to often increase that), so it’s not unusual for me to see 2,000-3,000 user sessions during the typical business afternoon and I rarely drop below 1,000. There doesn’t seem to be any harm in any of this, so I would just let the server do its job.   2)       You do have the ability to identify what is accessing your system. For example, you can use the user-agent to identify search engines – I’m sure there’s a list of them out there someplace – and you can either set your user$variabletimeout to 1 or simply purge your user scope at the end of your TAF when you identify a search engine as a user. Either way, you can add this logic to a header/footer and it should clean up after you’ve been crawled.   Robert   From: Fogelson, Steve [mailto:[EMAIL PROTECTED] Sent: Friday, April 28, 2006 9:40 AM To: witango-talk@witango.com Subject: Witango-Talk: Search Engines & User sessions   Andre Rekhtine’s post a couple of weeks ago and some activity on one of my sights last night brought this to a head for me.   I had a sight last night that SearchPublisher 3.0 was indexing. I am sure they are similar to other search engines in that each request invokes a new user session. Imagine if you have 15 to 20 sites on a Witango server, the normal 30 minute session inactivity variable purge, normal traffic for each site and a few search engines start indexing the sites. User sessions can exceed the 200 sessions that Andre talked about real quick.   Are any of you addressing this and if so how?   I was thinking about building a table to keep track of user sessions that would maintain last access and number of accesses by user reference. Then having a cron job run every minute to find sessions with only one access for the last five minutes. The cron job would then purge the inactive sessions. I am not even sure I can do this as I can’t find a tag to purge other sessions users vars!   I keep my user vars low – 4 or 5 per session and I also realize that I could reduce the VARIABLETIMEOUT system setting, but there are a lot of valid user sessions that I prefer not to keep requiring a new session initialization.   Comments please.   Thanks   Steve Fogelson Internet Commerce Solutions ________________________________________________________________________ TO UNSUBSCRIBE: Go to http://www.witango.com/developer/maillist.taf ________________________________________________________________________ TO UNSUBSCRIBE: Go to http://www.witango.com/developer/maillist.taf