Google App Engine
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
3,415
On Slideshare
3,401
From Embeds
14
Number of Embeds
2

Actions

Shares
Downloads
117
Comments
0
Likes
2

Embeds 14

http://www.slideshare.net 8
http://www.enthuse.me 6

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide


































































  • Your search crawler grabs the list of external links from the database and begins running it’s process. When it completes a page it stories it in a index.



    This application would be resources intensive and couldn’t be run on every page save so you would have to be run in a cron script.






Transcript

  • 1. Google App Engine Myles Braithwaite <myles@monkeyinyoursoul.com> Monkey in your Soul
  • 2. Who am I? • Indie/Hobby Programmer.
  • 3. What is Google App Engine?
  • 4. • Allows you to run your web applications on Google’s infrastructure • Scaling is really simple • No capital for system administrators
  • 5. Google’s Server Environment • Web Server (HTTP and HTTPS) • Datastore using BigTables (Schema Free) • Authentication of users though Google Accounts • Scheduled Tasks (i.e. Cron)
  • 6. Sandbox • Applications can only access other computers though HTTP and Email. • Users can only access GAE applications though HTTP. • An application cannot write to the filesystem. • Application code only runs in response to an HTTP request and has 30 seconds to run.
  • 7. Getting Started with App Engine
  • 8. • Download the SDK @ code.google.com/ appengine
  • 9. GAE SDK
  • 10. GAE Project
  • 11. Cron/Schedule Tasks
  • 12. cron.yaml
  • 13. Deploy your App
  • 14. Windows or a Mac
  • 15. GAE Roadmap • Task queues for performing background processing • Ability to receive and process incoming email • Support for sending and receiving XMPP (Jabber) messages
  • 16. Message Queues
  • 17. • Lets say you run a Wiki about Widgets. • And you want to index all the external links. • But you are on a Shared Host and have limited resources.
  • 18. ASITE.COM Database Search BSITE.COM Crawler Index CSITE.COM
  • 19. Application requests websites it wants indexed. ASITE.COM Database GAE Search Application BSITE.COM Crawler Index CSITE.COM GAE response with crawled data.
  • 20. Fear of the Elephant • AppScale: http://appscale.cs.ucsb.edu/ • To run GAE on EC2 or Eucalyptus • Some what Stable (Except no data persistence) • GAE2Django: http://tinyurl.com/gae2d/ • A bridge to run GAE code on Django. • Some what Stable (Except no database support)
  • 21. Resources • http://code.google.com/appengine • http://appengine.google.com • http://labs.google.com/papers/bigtable.html • http://appgallery.appspot.com • http://code.google.com/p/jaikuengine