Introduced in April 2009, Google Apps Engine for Java has come a long way, and seems ready for primetime. Google Apps Engine is a Platform as a Service cloud platform. Anyone can create and launch a GAE application at no charge, though resource utilization fees kick in when a site near the one million hits a month mark. Vosao (www.vosao.org) is an open source content management system developed from the ground up on Google Apps Engine for Java over the last 18 months. Vosao CMS uses many familiar Java libraries, like Velocity templates, popular web libraries, like JQuery, and popular mashup partners, like Picasa and Disqus.

1. Developing Java Web
Applications using Google
Apps Engine

2. Introduced in April 2009, Google Apps Engine for Java has
come a long way, and seems ready for primetime.
Google Apps Engine is a Platform as a Service cloud platform.
Anyone can create and launch a GAE application at no charge,
though resource utilization fees kick in when a site near the one
million hits a month mark.
Vosao (www.vosao.org) is an open source content
management system developed from the ground up on Google
Apps Engine for Java over the last 18 months. Vosao CMS
uses many familiar Java libraries, like Velocity templates,
popular web libraries, like JQuery, and popular mashup
partners, like Picasa and Disqus.

3. Platform as a Service
Cloud Computing Savings - Real or Imaginery?

4. Multi-Tenancy (Not!)

5. Pretty Much Free

6. Java

7. != AWS

8. BigTable

9. Throttled

10. IDEs, Toolkits, and Frameworks

11. The usual mashups

12. http://www.thetechtrendz.com/2010/07/top-10-best-google-app-engine-apps.html

13. The application environment
dynamic web serving
with full support for common web technologies
persistent storage
with queries, sorting and transactions
automatic scaling and load balancing
Google Account APIs
for authenticating users and sending email
a local development environment
that simulates Google App Engine on your computer
task queues
for performing work outside of the scope of a web
request
scheduled tasks for triggering events

14. The sandbox
Outgoing access via URL fetch or email services
Incoming access via HTTP (or HTTPS)
Store state via App Engine datastore, memcache.
Respond to web request, queued task, scheduled task
Return response data within 30 seconds
Quotas and Limits
Free 500MB of storage and 5 million page views a month.
10 applications per developer account.

15. Google Apps for Business
Central Development Management
Master account for Google Apps domain
Service Level Agreement (99.9%)
Pricing: $8 per user per month (up to $1000)
Expanded Enterprise Features
Hosted SQL
SSL on your domain

16. The Java Runtime Environment
Java SE Runtime Environment (JRE) 6 platform
Java Servlets
JavaServer Pages (JSPs)
Java Data Objects (JDO)
Java Persistence API (JPA) interfaces
JavaMail API
Google APIs
datastore
memcache
URL fetch
mail
images
Google Accounts

17. Development Workflow
App Engine software development kit
APIs and Libraries
Simulator
Upload tool
Google Plugin for Eclipse
create, test, and upload
The Administration Console
create, configure, version, logs, browse.

18. Vosao CMS for GAE
Maven
JUnit
Velocity Templates
JQuery / Superfish
CKEditor
reCaptcha
Disqus
Bliki
Native application
Direct calls to Google
Data Services API
Open source (LGPL) on
code.google.com

28. Vosao CMS
Challenges Windfalls
Throttling Direct Support
Backup Multisite
Hi volume = Hi performance Facebook

29. Roche and Douglas