Gossip-based reliable multicast message recovery system and...

Details Gossip-based reliable multicast message recovery system and... Gossip-based reliable multicast message recovery system and...

2005-12-27

2005-12-27

Pham, Chi (Department: 2666)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S312000, C370S390000, C370S432000

Reexamination Certificate

active

06980518

ABSTRACT:
A group-based multicast messaging system implementing dedicated logger member for logging all multicast messages sent in the system, and a reliable recovery method for missing messages. The reliable recovery method includes soliciting retransmissions of fresh missing messages to other group members and soliciting of retransmissions of stale missing messages to logger members of the group. One of the loggers or other group members repairs the missing message to thereby ensure reliable delivery of messages in the multicast messaging system. The soliciting of retransmissions makes use of negative gossips for fresh missing messages in the system, with the system implementing a mechanism for propagating the latest state information of members to enable garbage collection of archived messages at logging servers in the system. Further, employed is a selective hashing technique to further reduce control traffic and a relaxed group membership protocol for tracking multicast group membership.

REFERENCES:
patent: 6603972 (2003-08-01), Sawyer
patent: 6724770 (2004-04-01), Van Renesse
“Bimodal Multicast”, by Kenneth P. Birman, et al., ACM Transactions on Computer Systems, vol. 17, No. 2, May 1999, pp. 41-88.

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