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FIREBASE for ANDROID By: Dhrumil Shah

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The Realtime Backend for your App

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Creating an app shouldn’t require managing complex infrastructure.

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THE FULL STACK

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The full stack is never really that simple

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… and neither is the client side

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The user doesn’t care about your backend

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THE USER EXPECTS Speed Offline Multi-platform Simple Authentication

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FIREBASE The Realtime Backend for your App

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THE FIREBASE BACKEND

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CLOUD DATABASE NoSQL data-store Returns JSON from a RESTful API

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REALTIME DATA Whenever data is updated in Firebase, it sends the update down to every listening client

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STORE DATA Firebase ref = new Firebase("https://.firebaseio.com/message"); ref.setValue("All the things");

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SYNC DATA Firebase ref = new Firebase("https://.firebaseio.com/message"); ref.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot snapshot) { System.out.println(snapshot.getValue()); } @Override public void onCancelled(FirebaseError error) { } });

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OFFLINE

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INTERMITTENT OFFLINE What happens when you go through a tunnel? Firebase clients store a local cache of your data. When the user goes offline, the app still works as expected with the local cache.

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ENTENDED OFFLINE What happens when you go on a flight? On mobile, Firebase persists data to a local store. The app will continue to work even across app restarts.

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ONE LINE OF CODE Firebase.getDefaultConfig().setPersistenceEnabled(true);

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Firebase supports several forms of authentication Email & Password Google Twitter Facebook Github Anonymous … and even custom backends

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AUTHENTICATION ref.authWithOAuthToken("google", "", new Firebase. AuthResultHandler() { @Override public void onAuthenticated(AuthData authData) { // the Google user is now authenticated with your Firebase app } @Override public void onAuthenticationError(FirebaseError firebaseError) { // there was an error } });

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SECURITY By default everyone can read and write { "rules": { ".read": true, ".write": true, } }

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SECURITY Everyone can read, but no one can write { "rules": { ".read": true, ".write": false, } }

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SECURITY Secure specific parts of your firebase { "rules": { ".read": true, “message”: { ".write": false, } } }

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WELL DOCUMENTED

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FIREBASE META-DATA 276,348 registered developers 1M concurrent users on Firebase sites Joined Google October, 2014

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FOCUS ON YOUR APP The user doesn’t care about the backend What matters is that your app is fast and enjoyable

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QUESTIONS ?? http://www.dhuma1981.in

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