Hi All -- Got a problem I am trying to think through.
I want to allow users to list specific criteria, then receive an e-mail if a new item is created matching that criteria. What's the best way to go about this. My mind is going a little numb thinking about how to do this at scale efficiently. Simple example:
User 1: Wants to be notified every time a new product is released that is "red", a "shirt" and between $20 - $30?
I only want the user to be notified once and immediately when a new item is created. Some users may have more or less criteria they want.