[Solved] Given this Kafka event flow in choreography style:Service A publishes... Service C listens to 'payments' and updates inventory.What happens if Service B fails to publish 'PaymentProcessed' event? | Kafka

Kafka - Event-Driven Architecture

Given this Kafka event flow in choreography style:

Service A publishes event 'OrderCreated' to topic 'orders'.
Service B listens to 'orders' and publishes 'PaymentProcessed' to topic 'payments'.
Service C listens to 'payments' and updates inventory.

What happens if Service B fails to publish 'PaymentProcessed' event?

AService C will not update inventory because it never receives the event.

BService C updates inventory anyway because it listens to 'orders'.

CService A retries publishing 'OrderCreated' event automatically.

DA central orchestrator will resend 'PaymentProcessed' event.

Step-by-Step Solution

Solution:

Step 1: Trace event flow in choreography
Service A publishes 'OrderCreated', Service B reacts and publishes 'PaymentProcessed', Service C listens to 'payments'.
Step 2: Analyze failure impact
If Service B fails to publish 'PaymentProcessed', Service C never receives that event and cannot update inventory.
Final Answer:
Service C will not update inventory because it never receives the event. -> Option A
Quick Check:
Missing event means downstream service does not act [OK]

Quick Trick: In choreography, missing event stops downstream actions [OK]

Common Mistakes:

Assuming Service C listens to 'orders' directly
Thinking Service A retries automatically
Expecting a central orchestrator in choreography

Master "Event-Driven Architecture" in Kafka

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More Kafka Quizzes

Given this Kafka event flow in choreography style:

Step 1: Trace event flow in choreography

Step 2: Analyze failure impact

Final Answer:

Quick Check:

Want More Practice?