Consumer waits for certain types of events by placing subscriptions. Think of 'Linda' ... Conjugation of equality tests. sub1=(attr1=v1)^(attr2=v2)^(attr3=v3) ...
Securing the Publish-Subscribe Event Channel in an Active Space. Jodie Boyer. Chris Drexelius ... Discussed possible protocol enhancements. Installed an active space ...
QoS Policy Consistency. QoS policies for any one entity must be consistent with each other ... Supports QoS compatibility and consistency constraint checking ...
Not Suitable for Mobile Devices. Push-based. Event-based Dissemination. Event-Based Dissemination ... in a different fashion than traditional systems. Main ...
Messaging Systems : an example. Motivating Example. Assume a car dealership for a large company ... of information is classified based on subjects: subject ...
Republishers in a Publish/Subscribe Architecture for Data Streams ... Heriot-Watt University, Edinburgh. 6th July 2005. 6th July 2005. A.J.G. Gray and W. Nutt BNCOD22 ...
Continuously monitoring and detecting changes is crucial ... Filters out changes to images, advertisements, and other mundane content such as timestamps ...
E.g. Notify me of all stock quotes of IBM from New York stock exchange if the ... Car publishes on Carcontrol channel. Car subscribes to: CarControlChannel ...
Publications are Routed to Subscribers Based on Filters ... Publishers and Subscribers can be Anonymous to Each Other ... Trusted Gateways. TGW. TGW. Q&A Time : ...
MERCURY: A Scalable Publish-Subscribe System for Internet Games ... discovery, Stock tickers. Distributed auction ... latency important for real-time games ...
Subscriptions can be Obfuscated to a Certain Degree. Encrypted Messages ... Minimize Need for Obfuscated Publications. Permits Large Public SIENA Backbones ...
Self-configuring systems. Carnegie Mellon: The Rare Glitch Project 4 ... Lots of inherent non-determinism. Order of invocation of multiple event recipients ...
Publish-Subscribe systems are popular and a well suited for distributed event ... Envisions a Pub-Sub for wide-area networks. Popular Publish-Subscribe system. ...
Subscription Summaries for Scalability and Efficiency in Publish/Subscribe Systems ... A user subscribes to one or more groups, and will receive all events published ...