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Google App EngineShould you or should you not?

- Ashwin Prabhu

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What is Cloud computing?

The Larry Ellison view

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What is Cloud computing?

The hype machine

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What is Cloud computing?

The Richard Stallman view

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Cloud Computing Landscape

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Should you or should you not?

Kitna deti hai?

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Why Google App Engine?

Managing everything yourself is hard

DIY hosting for web application = Hidden costs and risks

Wouldn’t it be nice if somebody else managed all the risks for you?

What if there were a out-of-the-box solution?

What if you could run your app on Google's huge infrastructure, alongside Gmail, GDocs?

What if you get the services of Google’s CDN for “free”?

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Scalable from day 0

President Obama's Google Moderator stats

Why Google App Engine?

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What is Google App Engine?

Languages supported

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Google App Engine Features

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Lunch is free, Buffet is not!

Quotas and Restrictions

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Now you can have versions of your application!

Versioning need not be limited to code, not anymore.

Continuous Deployment

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Google App Engine Storage BigTable is highly scalable Not RDBMS A "sparse, distributed multi-dimensional sorted map" GQL - a very restricted version of SQL

SELECT [* | __key__] FROM <kind>

[WHERE <condition> [AND <condition> ...]]

[ORDER BY <property> [ASC | DESC] [, <property> [ASC |

DESC] ...]]

[LIMIT [<offset>,]<count>]

[OFFSET <offset>]

<condition> := <property> {< | <= | > | >= | = | != } <value>

<condition> := <property> IN <list>

<condition> := ANCESTOR IS <entity or key> Indexes different from traditional RDBMS indexes Scalability comes at a cost

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The dark clouds

Unless you take a closer look!

You have the entire JVM accompanied by a distributed database on the “cloud”.

What more could one cask for?

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The dark clouds

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Suggested reading

http://stackoverflow.com/questions/tagged/google-app-engine

http://code.google.com/appengine/docs/

Dan Sanderson

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Thank You!

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