Gapless delivery and durable subscriptions in a...

Electrical computers and digital processing systems: multicomput – Computer network managing – Network resource allocating

Reexamination Certificate

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Details

C709S224000, C709S228000, C710S006000, C705S014270

Reexamination Certificate

active

10177474

ABSTRACT:
A content-based publish/subscribe system for providing gapless message delivery from a publishing client to a subscribing client, the system includes a plurality of brokers operatively coupled to one another via a network. Each of the brokers include at least one processor and are configured as a publisher-hosting broker, a subscriber-hosting broker or an intermediate broker. The subscriber-hosting broker is operatively coupled to the publisher-hosting broker via the network through the intermediate broker. At least a portion of the plurality of brokers are configured so as to eliminate a need for persistent storage of messages at the intermediate broker and to substantially guarantee a gapless delivery of one or more messages transmitted by the publishing client to the subscribing client, even in the presence of a failure in the publish/subscribe system.

REFERENCES:
patent: 6199082 (2001-03-01), Ferrel et al.
patent: 6684250 (2004-01-01), Anderson et al.
patent: 6842782 (2005-01-01), Malik et al.
patent: 2002/0059369 (2002-05-01), Kem et al.
patent: 2002/0120779 (2002-08-01), Teeple et al.
patent: 2002/0138411 (2002-09-01), Monlux et al.
patent: 2002/0138421 (2002-09-01), Monlux et al.

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