1. GAE: DataStore
charsyam@naver.com

2. 고도의 확장성을 가지는
데이터 위주의 APP
개발의 어려움

3. Problem
1. Scalability
2. Security
3. Replication
4. maintenance

4. Problem
1. Scalability
2. Security
3. Replication
4. maintenance

5. Problem
1. Scalability
2. Security
3. Replication
4. maintenance

6. Problem
1. Scalability
2. Security
3. Replication
4. maintenance

7. Google App Engine
1. Distribution
2. Replication
3. Load Balancing
4. BigTable+GFS

8. Google App Engine
1. Distribution
2. Replication
3. Load Balancing
4. BigTable+GFS

9. Google App Engine
1. Distribution
2. Replication
3. Load Balancing
4. BigTable+GFS

10. Google App Engine
1. Distribution
2. Replication
3. Load Balancing
4. BigTable+GFS

11. Entity
N >= 0 Attribute
1 Identifier

12. Attribute
Value
Internal Class
Child Object
Complex Type

13. Main Key Field Type
Long
String without Encoding
Key
String with Encoding

14. Key 가 중복되면
데이터는
OverWrite 된다.

16. Creating jdoconfig.xml

17. Setting the Read Policy and
Datastore Call Deadline

18. Getting
a PersisitenceManager Instance

19. Query In JDO

20. Thank You!