Capstone - Designing a Notification System

Seven lessons, seven ways to move data. Now let's find out whether they're a list in your head or an instinct you can use. Communication patterns aren't steps you apply in order. They're a decision you make once per arrow in your diagram. A notification system is the perfect final exam, because it contains every kind of arrow this module taught: facts coming in, jobs flowing through, calls going out to providers, webhooks coming back, streams going down to browsers, and deliveries crossing into other companies' systems.