Introducing the art of Firebase

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1. (BaaS) back-end as a service GDG Cáceres Oscar Caballero Organizer of GDG Cáceres /oscarcpozas @oscar_pozas +OscarCaballeroPozas96
2. The back-end expects ➔ Speed ➔ Security ➔ Easy authentication GDG Cáceres ➔ Offline mode ➔ Cross-platform ➔ Scalable
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4. What is Firebase? Realtime Database Authentication Hosting Client GDG Cáceres
5. Realtime back-end: If the data change, all listeners will be called. All data always is up to date. GDG Cáceres
6. Forget the server No updates, no maintenance, only focus on your app GDG Cáceres
7. Database Advantages: • NoSQL data-store • Database is stored as JSON • Automatically scales with your app • Cross-platform • Offline mode GDG Cáceres
8. { “name”: ”Oscar”, “surname”: ”Caballero”, “age”: 19, “isHero”: true } https://my-example.firebaseio.com/user/4 GDG Cáceres
9. Offline? Internet connection Happy user GDG Cáceres
10. Security Firebase provides a flexible, expression-based rules language with JavaScript-like syntax Characteristics: • Easy, very easy GDG Cáceres
11. The rules By default { "rules": { ".read": true, ".write": true, ".validate": "newData.isString() && newData.val().length < 100" } } Three basic rules .read → if and when data is allowed to be read by users. .write → if and when data is allowed to be written. .validate → Defines what a correctly formatted value. GDG Cáceres
12. The rules II { "messages": { "message0": { "content": "Hello", "timestamp": 1405704370369 }, "message1": { "content": "Goodbye", "timestamp": 1405704395231 }, ... } } { "rules": { "messages": { "$message": { // only messages from the last ten minutes can be read ".read": "data.child('timestamp').val() > (now - 600000)", // new messages must have a string content and a number timestamp ".validate": "newData.hasChildren(['content', 'timestamp'])" } } } } GDG Cáceres
13. Authentication Characteristics: • Simple, few lines GDG Cáceres
14. Google+ Outh Twitter Outh Github Outh Facebook Outh Anonymous Outh GDG Cáceres
15. Login users Firebase ref = new Firebase("https://my-example.firebaseio.com"); Firebase.AuthResultHandler authResultHandler = new Firebase.AuthResultHandler() { @Override public void onAuthenticated(AuthData authData) {} @Override public void onAuthenticationError(FirebaseError firebaseError) {} }; // Authenticate users with a custom Firebase token ref.authWithCustomToken("<token>", authResultHandler); // Alternatively, authenticate users anonymously ref.authAnonymously(authResultHandler); // Or with an email/password combination ref.authWithPassword("jenny@example.com", "correcthorsebatterystaple", authResultHandler); // Or via popular OAuth providers ("facebook", "github", "google", or "twitter") ref.authWithOAuthToken("<provider>", "<oauth-token>", authResultHandler); GDG Cáceres
16. Hosting Characteristics: • It’s free* • SSL certificate • Global CDN • Easy deploy GDG Cáceres
17. my-site.firebaseapp.com 1. cd /your-project-folder 2. firebase login 3. firebase init → Edit firebase.json 4. firebase deploy GDG Cáceres
18. The big problem GDG Cáceres price?
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20. References, more info, another examples https://www.firebase.com/docs → Firebase apps examples • https://www.firebase.com/docs/web/examples.html • https://www.firebase.com/docs/ios/examples.html • https://www.firebase.com/docs/android/examples.html • https://goo.gl/fNq5IZ → Connect with your services • https://zapier.com GDG Cáceres
21. The end Questions? Applauses? GDG Cáceres /oscarcpozas @oscar_pozas +OscarCaballeroPozas96