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GROUP COMMUNICATION: Multicast Communication-Causal Ordering of message and Causal Order Multicast Protocol

GROUP COMMUNICATION: Multicast Communication-Causal Ordering of message and Causal Order Multicast Protocol

GROUP COMMUNICATION: Multicast Communication-Causal Ordering of message and Causal Order Multicast Protocol

GROUP COMMUNICATION: Multicast Communication-Causal Ordering of message and Causal Order Multicast Protocol.

Group Communication: MultiCast Communication Causal Ordering of message-Causal Order Multicast Protocol. Causal Order Protocols for Group Communication Message Ordering Causal Order of Messages group communication in distributed system.

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Group Communication: Multicast Communication & Causal Ordering of Messages

1. Multicast Communication

Multicast communication refers to the process of sending a message from one sender to multiple receivers in a group. It is commonly used in distributed systems, network communication, and parallel computing to efficiently distribute data.

Types of Multicast Communication

2. Causal Ordering of Messages

Causal ordering ensures that messages are delivered to all receivers in an order that preserves cause-effect relationships.

Example of Causal Ordering

Mathematical Representation (Happens-Before Relation)

3. Causal Order Multicast Protocol

The Causal Order Multicast Protocol ensures that all messages are delivered in a way that respects causal dependencies.

Key Components of the Protocol

  1. Vector Clocks – Each process maintains a vector timestamp to track causal relationships.
  2. Message Buffering – Messages are buffered until all causally preceding messages arrive.
  3. Dependency Tracking – Each message carries its timestamp to enforce correct ordering.

Steps in Causal Order Multicast

  1. Sender Process: Assigns a vector timestamp to the message.
  2. Multicast Transmission: The message is sent to all processes.
  3. Receiver Process:
    • Checks the vector timestamp.
    • If causally dependent messages are missing, it buffers the message.
    • Delivers the message when dependencies are met.

Example Scenario

4. Applications of Causal Order Multicast

Conclusion

Causal order multicast is essential in distributed systems to ensure consistent and predictable message delivery. The use of vector clocks and message buffering allows systems to maintain logical consistency, preventing misordering of messages that could lead to inconsistencies.

GROUP COMMUNICATION: Multicast Communication-Causal Ordering of message and Causal Order Multicast Protocol

Message Ordering and Group Communication

Communication in Distributed Systems

Group Communication