Dynamic access control in a content-based publish/subscribe system with delivery guarantees

a content-based publishing/subscription system and dynamic access control technology, applied in the direction of digital transmission, data switching networks, instruments, etc., can solve the problems of disruption of pub/sub service, further complicated access control in pub/sub systems,
US20070245018A1Inactive Publication Date: 2007-10-18IBM CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
IBM CORP
Publication Date
2007-10-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

Improved access control techniques for distributed messaging systems such as content-based publish / subscribe systems are disclosed. For example, a method for providing access control in a content-based publish / subscribe system, wherein messages are delivered from publishing clients to subscribing clients via a plurality of brokers, includes the following steps / operations. One or more changes to an access control policy are specified. An access control version identifier is associated to the one or more changes. The one or more changes are sent to one or more brokers of the plurality of brokers that have a publishing client or a subscribing client associated therewith that is affected by the one or more changes. The access control version identifier associated with the one or more changes is sent to each of the plurality of brokers.
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Description

FIELD OF THE INVENTION

[0001] The present application generally relates to distributed messaging systems and, more particularly to access control techniques in such systems. BACKGROUND OF THE INVENTION

[0002] A popular approach employed in distributed messaging systems for use with asynchronous distributed applications is the content-based publish / subscribe (pub / sub) messaging approach. A content-based pub / sub system includes publishing client devices or machines (“publishers”) that generate messages and subscribing client devices or machines (“subscribers”) that register interest in messages matching the predicate / Boolean filter specified in their subscription. The system ensures timely delivery of published messages to all interested subscribers, and typically contains routing broker devices or machines (“brokers”) for this purpose. Thus, in the content-based pub / sub paradigm, the information providers (i.e., publishers) and consumers (i.e., subscribers) are decoupled, since publi...

Claims

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