Firebase Realtime DB vs Firestore

• Firestore has better querying and more structured data
• document-model database 
• store data in Documents, organized into Collection
• Each document contain a set of key-value pairs.
• Documents can contain sub collections and nested objects.
• Search multiple field.
• Realtime DB better latency

Pricing Model

• Realtime DB = amount of downloaded and store on DB.
• Firestore DB = number of reads or write.
• Traditional App, Request large of data > Firestore
• Many updates in second > Realtime

Firestore Data Model

• Similar to JSON
• Document is record, map value with name
• name of document is unique (add() will automatically)

Firebase C#

private FirebaseClient Auth()

{

    var firebaseClient = new FirebaseClient(_URL,

        new FirebaseOptions

        {

            AuthTokenAsyncFactory = () => Task.FromResult(_FireBaseApiKey)

        });

    return firebaseClient;

}

public async Task<Dictionary<string, T>> ListLimitLast<T>(string table, string filterKey, string filterValue, int limitLast)

 {

     var firebase = Auth();

     var result = await firebase

         .Child(_Database)

         .Child(table)

         .OrderBy("DriverStaff/UserName")

         .EqualTo(filterValue)

         .LimitToLast(limitLast)

         .OnceSingleAsync<Dictionary<string, T>>();

     return result;

 }

use dictionary because ID is parent, object is child.

Firebase Cloud Function

• Function for Fire base features (trigger event by firebase)
• in GCP, not your mobile (light for your mobile app)
• Logic Centralized , safe, server less
• Example
• Write Realtime Database trigger function
• Upload your storage bucket
• New user authentication
• Incoming HTTPS requests
• Send Message

1. Install Node.JS
2. Install Firebase CLI
• npm install -g firebase-tools
3. cd to folder (firebase cloud function project)
4. firebase login
5. firebase init (Deselect Database and Hosting)

https://www.youtube.com/watch?v=EvV9Vk9iOCQ#t=314.64541