As I wrote previously, we need to be able to support failover of systems. As an example:
1. User logs in to our system via the web 2. A socket connection is established back to the user to enable us to push messages back to the user. 3. The mapping of the user name to socket connection is stored in a cache on the local system 4. The lateral cache broadcasts this update to other nodes 5. Local node goes down, user is failed over to the other node. OK so far since username-to-socket connection was broadcasted 6. Local node comes back up, no information on user since information not rebroadcasted 7. Sometime later, if second node failed, user fails over to first node but processing fails because no information on socket connection The best solution would be to build this into the cache itself, such that on restart a distributed cache such as the lateral cache could broadcast a request and in response get item/value pairs. This would also prove useful in systems where nodes are brought up and down as needed. To do this externally, I have modified my APIs for get/put/remove/listItems to map all items to groups, such that list items returns all of the items in the cache, as I am using the cache name as the group name. I can't find any references to use of groups except that a few old posts claiming this is not a good thing to do, but can't find any alternatives. Any thoughts? Michael I Toback Principal Engineer Orchestrating Business Processes Chordiant Software Cupertino, Ca 95014 (408)-517-6165 The information transmitted herewith is sensitive information of Chordiant Software or its customers and is intended only for use to the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon, this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
