DITRIBUTED SYSTEM NOTES,IOE,TU,BCA
CAUSAL ORDERING
Causal ordering of messages in distributed systems ensures that messages are delivered in an order that respects the causal relationships between events. This concept is crucial for maintaining consistency and coherence in systems where operations are dependent on the order of events.
Causal ordering ensures that if an event AAA causally affects an event BBB, then AAA is delivered before BBB to all nodes in the system. This concept is based on the "happens-before" relationship defined by Lamport.
Vector clocks are a common method used to implement causal ordering.