Central server : Server Push the information
Each client maintain a local cache of the current
net-VE state
The server "push" information to the clients over a reliable, ordered
TCP/IP stream whenever the data is updated
Clients must request and obtain a lock before updating central state data
NB. Round Robin Passing Scheme : to ensure that all clients get an equal opportunity
to make shared state update
Immediate data access
Slower data update.
Shastra system (Purdue Univ.)