The Ninja Base Architecture

The Ninja Base ("MultiSpace")
Environment for scalable services
Solve "hard" problems in one place
Persistent state management
Scalability, High availability

Overall Design:
Workstation Cluster
Incremental scalability, High redundancy, Inexpensive
Java Virtual Machine on each node
Robust environment, Strong typing, Mobile code

Challenges
Programming model
How to exploit Java for Internet services?
Performance
How to deliver high-performance I/O and communication?