experimental-extensions VS functions-samples

Firebase Extensions

There's even an (experimental) Firebase Extension for setting this up: https://github.com/FirebaseExtended/experimental-extensions/blob/next/firestore-auth-claims/README.md

Firebase Functions Docs

I tried to make a reddit like app. I used both realtime-database and firestore as database. The billing of the two is different from each other. I used realtime-database for frequently updated data (like or upvote, downvote count for ex.) and firestore for more stable and large data (post, comment, community and user data..). While doing this, I only used database rules, I did not use Cloud functions. So, I suggest you use a hybrid database to minimize your bill as much as possible and you can do amazing things with database rules. Have a good works.

const functions = require("firebase-functions"); // // Create and deploy your first functions // // https://firebase.google.com/docs/functions/get-started // // exports.helloWorld = functions.https.onRequest((request, response) => { // functions.logger.info("Hello logs!", {structuredData: true}); // response.send("Hello from Firebase!"); // });

Try something along these lines…? https://github.com/firebase/functions-samples/tree/main/Node-1st-gen/quickstarts/email-users

Cloud Functions for Firebase - Pros: Aligns to my app which uses Firebase; Cons: have to use Typescript which I have no experience with

Cloud Functions run on Google's servers and are part of your project, so only you and your project collaborators can deploy that code.

That would be a Firebase Cloud Function. Check their latest list of YouTube tutorials, they'll guide you through creating an app with full Firebase features.

Cloud Functions for Firebase