Ben Are we going to see one of your great comprehensive articles on locking in CFMX anytime soon? I think a lot of people are stil not clear about locking in cfmx.
Kola > >-----Original Message----- > >From: Ben Forta [mailto:ben@;forta.com] > >Sent: 01 November 2002 19:10 > >To: CF-Talk > >Subject: RE: Understanding Locking In CFMX > > > > > >If you can be 100% sure that there will never be a chance that a single > >client will trigger more than one thread, then you are right. But ... > > > >* Frames > >* Users hitting refresh on a page before it finishes processing > >* Retry attempts > > > >All of those, and more, can indeed cause a situation where there is more > >than one active thread per session. > > > >But having said that, you are right. This is obviously a much bigger > >potential problem for APPLICATION or SERVER. Except for the fact that > >SESSION is likely used and updated more, so it may be a bigger problem > >for SESSION after all. :-) > > > >--- Ben > > > > > > > >-----Original Message----- > >From: Bud [mailto:webcreation@;mindspring.com] > >Sent: Friday, November 01, 2002 1:46 PM > >To: CF-Talk > >Subject: RE: Understanding Locking In CFMX > > > > > >On 11/1/02, Ben Forta penned: > >>Any application or development language that allows multiple threads to > > > >>access shared data has to deal with it - operating systems do, as do > >>DBMSs, as do development languages. It is not a CF issue at all. > > > >Well, assuming that something like a shopping cart is stored in a > >session variable. Each session should be unique to the user, correct? > >So unless a user has 2 windows opens and clicks View Cart > >simultaneously in one window while clicking Update Cart in the other, > >there shouldn't be a problem, should there? Or without locking, is > >there a chance ColdFusion could read the variable while it's still > >being written. > > > >Example: > > > >1. <cfset temp = QuerySetCell(session.cart, "quantity", #form.quantity#, > >1)> > > > >2. There are <cfoutput>#session.cart.quantity#</cfoutput> items in your > >cart. > > > >Could Step 2 process before step 1 is finished? I didn't think it could. > > > >That's one reason I could never understand why session locking was > >needed. Application and server variables I understand. > >-- > > > >Bud Schneehagen - Tropical Web Creations > > > >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > >ColdFusion Solutions / eCommerce Development [EMAIL PROTECTED] > >http://www.twcreations.com/ 954.721.3452 > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm
