Phantom Sessions: These are sessions generally created by bots from Google, msn, yahoo, etc. For every page that they access, a session is created. Since these clients have no cookies, CF creates a new session for every page they touch. Even more annoying are sessions created by CFHTTP calls originating from one of your own templates.
On our website (large, 500,000+ pages in Google), we get Google and buddies crawling over our site aggressively all day long. Add in a handful of visitors who disable cookies, and you end up with a huge number of session objects that need not exist. I estimate that about half of all sessions created on our server are useless. In peak, that can amount upwards to about 4000+ sessions in a 20 minute span. Phantom session objects add overhead, need to be checked for timeouts by the system, take up memory, add unnecessary burden to GC, etc. Is the effect huge? Probably not, because empty session objects are small. It would be nice to limit them though. Does anyone know of a way to reduce the creation of such "phantom" sessions? I'd like CF to be able to say "hello Google, no session object required for you". Regards Terry ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| ColdFusion MX7 by Adobe® Dyncamically transform webcontent into Adobe PDF with new ColdFusion MX7. Free Trial. http://www.adobe.com/products/coldfusion?sdid=RVJV Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:280310 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
