Introduction to Google App Engine
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The document discusses Google App Engine, a cloud computing platform for building web applications, emphasizing its dynamic web server capabilities, automatic scaling, and integration with various web technologies. It outlines the application lifecycle, development using App Engine SDK, security measures, quotas, and pricing. Additionally, it mentions future plans for expanding language support and features, providing useful resources for developers.
Introduction to Google App Engine
- 1. App Engine Google's Cloud Computing Platform Rajdeep Dua Anirudh Dewani Google Developer Relations
- 2. Topics of discussion Cloud Computing Defined Classification of Cloud Computing Players What is App Engine? Why App Engine? Application Lifecycle with App Engine Development using App Engine Deploying Applications Security Quota & Pricing What's next ?
- 4. source : Merrill Lynch IDC Saas Report, May 2008
- 5. What is App Engine? Google's Platform to build Web applications on the cloud Dynamic web server, with full support for common web technologies Automatic scaling and load balancing Transactional DataStore Model Integration with Google Accounts through APIs.
- 7. App Engine Application Lifecycle
- 8. Development Cycle App Engine SDK App Engine Admin Console
- 9. App Engine Physical Deployment Diagram Node 1 Node 2 Node 3 Node N Google Cluster1 Node 1 Node 2 Node 3 Node N Google Cluster N Node 1 Node 2 Node 3 Node N Datastore Cluster1 Node 1 Node 2 Node 3 Node N Datastore Cluster M Python web server Persistent Layer HTTP Request HTTP Response
- 10. Developing applications using App Engine App Engine SDK Web server dev_appserver.py Application uploader appcfg.py Local DataStore implemetation App Engine APIs
- 11. Developing Application with AppEngine
- 12. Application Configuration - app.yaml application: helloworld version: 1 runtime: python api_version: 1 handlers: - url: /.* script: helloworld.py yaml (yet another markup language) - Deployment Descriptor for the Application Maps URLs to the handlers
- 13. Runtime Components of an Application deployed on App Engine URL Python Handlers /*.html HtmlHandler /*.form FormHandler app.yaml (deployment descriptor) WebApp Framework (Google’s Web framework) Django Framework (Third Party) WebOb Framework (Third Party) Mail APIs Users APIs MemCache API Data Store APIs Python Runtime
- 14. Request Handler - helloworld.py
- 15. App Engine DataStore A powerful non relational distributed data storage service Query Engine GQL - SQL like language Transactional persistence with a simple API DataStore API
- 16. DataStore - Runtime components
- 17. App Engine DataStore Entity from db.Model Persisting An Entity
- 18. GQL GQL
- 19. Realization - App Engine Request
- 20. Testing and Deployment Local testing dev_appserver.py helloworld/ Deploy appcfg.py update helloworld/ On the cloud http://<application-id>.appspot.com
- 21. APIs
- 22. Secure Sandbox
- 23. Quotas & Road map
- 24. Quota Apps per developer 3 Storage per App 500 MB Files per App 1000 Size per file 1MB Emails per Day 2000 Bandwidth In per Day 10,000 MB Bandwidth Out per Day 10,000 MB CPU Megacycles per Day 200 Million HTTP Requests per Day 650,000 Datastore API Calls per Day 2.5 Million URLFetch API Calls per Day 160,000 $0.10 - $0.12 per CPU core-hour $0.15 - $0.18 per GB-month of storage $0.11 - $0.13 per GB outgoingbandwidth $0.09 - $0.11 per GB incoming bandwidth Expected Pricing Daily Free Quota Fixed Quota
- 25. What's Next More languages on App Engine. Scheduled jobs Large download/upload support Purchasing additional capacity
- 26. Useful Resources Documentation and Download: http://code.google.com/appengine/ Discussion group: http://groups.google.com/group/google-appengine/