Presentation shares the facebook app that Imaginea built on top of Zembly Platform for the Beijjing Olympics 2008. We can build many more like this.

1. Building Applications for the Cloud
G A M I N G A P P S O N F A C E B O O K A N D
Z E M B L Y P L A T F O R M -
M Y P I C K S : P R E D I C T T H E W I N N E R S A T
O L Y M P I C S
Copyright (c) 2009, Pramati Technologies Private Limited. Imaginea is a Pramati business.
All trade names and trade marks are owned by their respective owners 11/4/2009 1

2. MyPicks architecture
We
b
We M S
LB
b
We S
b User
Shard 1
M S M
Shard
Lookup
DB We
LB b S
We M S Friends
b DB
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b User
Shard 2
S3
Result
Processor

3. MyPicks architecture notes
• User DB is sharded (with hot standby)
• We used lookup table for sharding
– Cached in memory instead of memcached
– 10MB cache size for million users
– Sharding logic plugged-in as NodeChooser in Pramati
Web Loadbalancer
• Friends DB uses replication instead of Map-Reduce
• Attaching the webservers to a shard reduces the
number of connections to the User DB

4. Application main page on Facebook

5. Application main page on Facebook – Start playing for a
country

6. Upcoming Events –View events and click Predict

7. Make Prediction for Gold, Silver and Bronze medals

8. Completed Events – See prediction results and points
earned

9. Leader Board Country view

10. Leader Board Individuals across countries

11. Leader Board My Facebook Friends

12. Leader Board My country players

13. My Statistics

14. About page

15. Thank you
i n f o @ i m a g i n e a . c o m