Publish-Subscribe Pattern

Simulate a Kafka pub-sub pattern. Create a "topic" as a Flux emitting "order-1", "order-2", "order-3". Subscribe two consumers: "Consumer A" and "Consumer B". Each should print their name and the message.

This simulates multiple consumers in a pub-sub pattern.

Expected

Consumer A: order-1
Consumer A: order-2
Consumer A: order-3
Consumer B: order-1
Consumer B: order-2
Consumer B: order-3

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Main.kt

Publish-Subscribe Pattern

easy⏱ 15 minkotlinreactorchallengekafka-messaging

This simulates multiple consumers in a pub-sub pattern.

Why this works

In a pub-sub pattern, multiple consumers independently receive copies of all messages. With a cold Flux, each subscriber gets all events independently — modeling how Kafka consumer groups with different group IDs work.

Expected output

Consumer A: order-1
Consumer A: order-2
Consumer A: order-3
Consumer B: order-1
Consumer B: order-2
Consumer B: order-3

Publish-Subscribe Pattern

This simulates multiple consumers in a pub-sub pattern.

Expected

Consumer A: order-1 Consumer A: order-2 Consumer A: order-3 Consumer B: order-1 Consumer B: order-2 Consumer B: order-3

Publish-Subscribe Pattern

easy⏱ 15 minkotlinreactorchallengekafka-messaging

This simulates multiple consumers in a pub-sub pattern.

Why this works

Expected output

Consumer A: order-1 Consumer A: order-2 Consumer A: order-3 Consumer B: order-1 Consumer B: order-2 Consumer B: order-3