When should I use cloud functions?

Developers can use Cloud Functions to keep users engaged and up to date with relevant information about an app . Consider, for example, an app that allows users to follow one another’s activities in the app. Each time a user adds themselves as a follower of another user, a write occurs in the Realtime Database.

Read more

How does firebase emulator work?

The Firebase Local Emulator Suite allows you to test your code with our core products in an interoperable way. The Cloud Functions emulator supports HTTP functions, callable functions, and background functions triggered by Cloud Firestore, Realtime Database, Cloud Storage, Authentication, and Pub/Sub .

Read more