data center for differnet applications

There are three different data centers:
1. for web services such as kaixin001.com, douban.com, ...
2. for data mining platform
3. for MMORPG (网游)

For 1st type:

Application logic is relatively simple
Transcation is not necessary
latency V.S. Throughput
Each application uses Ad-hoc way to provide
- blob stroage - photo, image, music
- table storage - user profile, tags,
- computing - sns graph compute, user behavior mining, global summary (tag cloud, hot topics)

flexible & uniform platform
amazon web service, google app engine, windows azure

For 2nd type: we are actually building...

For 3rd type, MMORPG (网游)
- expensive and low efficiency solution (HPC)
- big business impact
- virtual world game (secondlife, hipihi)