Explore Firebase's unified development platform; gain insights into authentication, Firestore, Cloud Functions, and deployment with CLI. Delve into hands-on web application creation and comprehensive tools.

firebase-lessons.tar.gz

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Firebase lesson

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Firebase is a unified application development platform to create, deploy, and monitor web and mobile experiences. It unites common product functions in a single platform, freeing engineers to create functionality and user experience rather than having to create the infrastructure.

This course is a comprehensive introduction to the Firebase 9 SDK through hands-on development of a web application. You’ll start with basic concepts and functions like authentication, database, and Cloud Storage with Firestore. You’ll then learn Cloud Functions for Firebase, environment variables, Security Rules, and hosting capabilities before deploying an application using the command line interface (CLI). At each step, you’ll get hands-on exercises to modify the code, see real-time output in your browser, and finish with an assessment.

By the end of this course, you’ll have all the tools you need to build and deploy a web application with the Firebase 9 SDK—the latest version of Firebase.

A Complete Guide to Firebase on the Web

The **Firebase Realtime Database** is a scalable, real-time NoSQL cloud database provided by Firebase for storing application data. Data is stored as a JSON tree and synchronized in real time across multiple client applications. 

# How it works

The Firebase Realtime Database lets us store and sync data between users in real time. This makes it easy for users to access their data on any device—web or mobile— and helps users collaborate. Whenever data is updated in the Realtime Database, it stores the data in the cloud and updates all connected devices instantly. The Firebase Realtime Database persists data to the local cache, therefore making it optimized for offline usage. Whenever a user goes offline, it uses the device’s local cache to store data and synchronizes both the cloud data and the local data when the user is online.

With the _security rules_, we can control users’ access to each database on our application. This is useful in securing the database and authorizing user operations. It also makes sure that users only have access to their data.
 
# Implementation

Before using the Firebase Realtime Database, we must import and initialize the Firebase Database service. To begin, we import the `getDatabase` function from the `firebase/database` subpackage. Then, we initialize the Firebase database by calling the `getDatabase` function. We can also pass the Firebase App instance to it:





Get a brief introduction to Firebase Realtime Database.

Introduction

Get Started with Firebase

Firebase Authentication

The Firebase Realtime Database

Cloud Firestore

Cloud Storage for Firebase

The Firebase CLI

Cloud Functions

Environment Variables in Firebase

Firebase Security Rules

Firebase Hosting

Firebase Assessment

Conclusion

Appendix

Introduction to the Firebase Realtime Database