Presentazione Google App Engine Alessandro Aglietti - Lorenzo Bugiani GDG Firenze

1. Google App Engine

2. ● Cloud Computing
● Cos’è Google App Engine
● Perchè PaaS
● Performance
● Esempi pratici
Agenda

3. ● Iaas: Utilizzo di risorse
hardware in remoto
● PaaS: virtualizzazione
di una piattaforma
● SaaS: utilizzo di
programmi installati su
un server remoto
Cloud Computing
SaaS
PaaS
IaaS
Gmail
Salesforce
Google App Engine
Windows Azure
Amazon AWS
Google Compute
Engine

4. Google App Engine is a Platform as a Service
(PaaS) offering that lets you build and run
applications on Google’s infrastructure
Cos’è App Engine

5. Perché PaaS
Web applications in un mondo IaaS:
● Gestione server virtuale
● Scalabilità?
● Bilanciamento del carico?
● Quali servizi implementare?

6. Perché PaaS

7. Perché PaaS

8. Scalabilità

9. Scalabilità

10. Bilanciamento del carico

11. Riduzione dei costi

12. App Engine Sandbox

13. App Engine Sandbox
Limiti:
● Connessioni in uscita: solo tramite i servizi offerti da App
engine (URL fetch e le nuove socket Api)
● Connessioni in ingresso: solo HTTP(s) sulle porte 80 e 443
● No accesso in scrittura al Filesystem
● No codice nativo
● Tempi di esecuzione delle richieste limitati superiormente

14. App Engine Platform
https://developers.google.com/appengine/

15. Linguaggi disponibili

16. Batterie incluse

17. App Engine Demo
http://gdg-firenze.appspot.com/
http://tiny.cc/gae-gdg-firenze
https://github.com/alessandro-aglietti/gdg-aperitivo-gae-1-aprile-2014

18. User Service
Single Sign-on for authentication
Integrated with all Google services
2-step authentication
https://developers.google.com/appengine/docs/java/users/

19. User Service Demo

20. Datastore
A distributed datastore that grows with your data
https://developers.google.com/appengine/docs/java/datastore/

21. Datastore Demo

22. Memcache
Distributed in-memory data cache in front of or in
place of robust persistent storage
Supports both synchronous and asynchronous
caching
https://developers.google.com/appengine/docs/java/memcache/

23. Memcache Demo

24. Task Queue
For Background work
Small tasks are added to queues
Process tasks based on the processing rate in the
queue’s definition
App Engine scales to make this possible

25. Cloud Endpoint
Authn/z with OAuth2
APIs explorer
Dedicated frontend
REST Client autogeneration

26. DOMANDE?