gemfire data distribution among nodes

This is one of the most frequently asked questions. Info below comes from http://xml.gov/presentations/gemstone/gemfire.ppt

1) Consistency Model —
* Distribution without ACKs
* Distribution With ACKs
* Distribution With global locking

2) Pub-Sub semantics —

3) Multiple transports —
TCP
UDP MultiCast
(See sys admin guide http://www.gemstone.com/docs/6.5.0/product/docs/html/Manuals/wwhelp/wwhimpl/js/html/wwhelp.htm#href=SystemAdministratorsGuide/SAG%20Title/TitlePageHTML.html)

4) multi-site member discovery/communication

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You need to keep your distributed system from splitting into two separate running systems when members lose the ability to see each other, as shown in Network Failure-Network Partition Configurations. When a network failure, or partitioning, occurs, the problem could result in data inconsistencies or a forced disconnect. The solution for this problem is to stop one of the two subgroups from continuing to operate independently.

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