Communication Paradigms - Connect

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Publish-Subscribe Systems (continued) Adv. Dist. Systems G. Blair/ F. Taiani 38
A Closer Look at the Subscription Channel-based Model Publishers publish events to named channels and subscribers then subscribe to one of these named channels and therefore receive all events sent to that channel Rather primitive scheme and the only one that defines a physical channel (all other schemes employ some form of filtering over the content of an event as we will see below) Topic-based (also referred to as subject-based) Each notification is expressed in terms of a number of fields with one field denoting the topic and subscriptions defined in terms of this topic of interest Similar to channel-based approaches (implicit vs. explicit) Can be enhanced by introducing hierarchies of topics Adv. Dist. Systems G. Blair/ F. Taiani 39
Page 1 and 2: Advanced Distributed Systems Commun
Page 3 and 4: A Framework for Understanding Distr
Page 5 and 6: The Problem: A Social Network Syste
Page 7 and 8: Interprocess Communication
Page 9 and 10: Other Approaches Message passing,
Page 11 and 12: Remote Invocation: Remote Procedure
Page 13 and 14: Styles of RPC First class RPC Int
Page 15 and 16: Interface Definition Languages Wha
Page 17 and 18: Remote Invocation: Remote Method In
Page 19 and 20: From RPC to Distributed Objects (Re
Page 21 and 22: Indirect Communication: General
Page 23 and 24: A Closer Look at Coupling Remote i
Page 25 and 26: Indirect Communication: Group Commu
Page 27 and 28: A Typical Group Service interface G
Page 29 and 30: Problems Reliability (against loss
Page 31 and 32: Implementing Reliable Multicast
Page 33 and 34: Ordering Guarantees Unordered mult
Page 35 and 36: Implementing Total Ordering The s
Page 37: Publish-Subscribe Systems What is
Page 41 and 42: Implementing Publish-Subscribe The
Page 43 and 44: Realising Content-based Approaches
Page 45 and 46: The Algorithm upon receive publish(
Page 47 and 48: Indirect Communication: Message Que
Page 49 and 50: Message Queues (continued) Adv. Dis
Page 51 and 52: Distributed Shared Memory What is
Page 53 and 54: Indirect Communication: Tuple Space
Page 55 and 56: Tuple Spaces(continued) Adv. Dist.
Page 57 and 58: Comparison of Approaches Adv. Dist.

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