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.

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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 .

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How do you deploy a cloud function?

Deployment. Deployments work by uploading an archive containing your function’s source code to a Cloud Storage bucket . Once the source code has been uploaded, Cloud Build automatically builds your code into a container image and pushes that image to either Artifact Registry or Container Registry.

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