Avoiding sending duplicate notifications.
I am hoping this is a really simple queastion. I haven't come accross it
yet in Shyam's book...
I want to make sure that people don't get duplicate notifications. For example,
if you can subscribe to recieve notifications when records of a certain category
are added to the system, I want to allow people to subscribe mutliple times
with multiple categories, but make sure that I don't notify the person more
than once when something happens. Do I need to add state to my SSNS app?