> The objects I am copying from are persisted in the session > scope. I would like to be able to read from these objects at > runtime without having to lock them all over the place. Does > creating a pointer in the request scope to an object in > session absolve you from locking? I'm not sure, and to be > honest, I haven't found a lot of information either way on > the issue, so copying the object seems to be playing it safe, no?
No, creating a reference in the request scope to an object in the session scope doesn't absolve you of responsibility for race conditions. But is there really a possibility for a race condition here anyway? I sincerely doubt it (although I would need to see source code to guarantee that). What I can guarantee, though, is that "playing it safe" in this case may not actually be a safe solution at all; locking imposes significant overhead, so using it where it isn't necessary may prevent your application from scaling as needed. As someone who spends a fair amount of my time reviewing others' code, I've actually run across this many times; far more than I've encountered race conditions. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ Fig Leaf Software provides the highest caliber vendor-authorized instruction at our training centers in Washington DC, Atlanta, Chicago, Baltimore, Northern Virginia, or on-site at your location. Visit http://training.figleaf.com/ for more information! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Get the answers you are looking for on the ColdFusion Labs Forum direct from active programmers and developers. http://www.adobe.com/cfusion/webforums/forum/categories.cfm?forumid-72&catid=648 Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:292287 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
