1. @lshimokawa
Google App Engine

3. Disc
laim
er
my experience and
personal opinions
developing with
google App engine

5. startups

6. dev ops

7. bleeding edge
http://fc02.deviantart.net/fs12/i/2006/291/6/b/464_by_Blood__Stock.jpg

9. Programming
Languages

10. The JRE Class
Black List
•Write to the FileSystem
•Open sockets
•System calls
https://developers.google.com/appengine/docs/java/jrewhitelist

11. Build
•mvn archetype:generate
•mvn appengine:devserver
•mvn appengine:update
http://code.google.com/p/appengine-maven-plugin/

12. Testing
•Test Driven Development.
•Local unit testing with JUnit.
•Test GAE services locally (outside
of the server).
•Test helpers for Datastore,
Blobstore, Memcached, etc.
https://developers.google.com/appengine/docs/java/tools/localunittesting

13. logging
•GAE uses Java Logging
API by default.
•Can use SLF4J as
Facade with Log4j.

14. Google App engine
datastore
•NoSQL schemaless
object datastore
•Query engine.
•Atomic transactions.
https://developers.google.com/appengine/docs/java/datastore/overview

15. datastore
jpa, jdo
http://www.datanucleus.org/

16. objectify
•Java data access API for GAE
•"Middle ground": easier to use
and more transparent than JDO
or JPA, but significantly more
convenient than the Low-Level
API.
http://code.google.com/p/objectify-appengine/

17. Google App engine
Blobstore
•Allows applications to
serve data objects (blobs)
•Limited by the amount of
data that can handled over
a single HTTP connection
https://developers.google.com/appengine/docs/java/blobstore/overview