Pub Sub

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Publish-Subscribe pattern where messages are published to a topic and delivered to all subscribers. Each subscriber gets its own copy. Enables decoupled architectures where publishers do not know about subscribers. Examples include Kafka topics, SNS, and Google Pub/Sub.

Key Properties

• Topic-Based Routing
• Multiple Subscribers
• Event Broadcasting

Related

• Point-to-Point Messaging (one-to-one alternative)
• Message Ordering (ordering within topics/partitions)

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distributed-systems messaging