Which of the following is the correct way to describe event-driven communication between microservices?

easy📝 Architecture Q12 of 15

Microservices - Event-Driven Architecture

AService A calls Service B's API and waits for a response

BService A publishes an event to a message broker and continues processing

CService A directly updates Service B's database

DService A shares its memory space with Service B

Step-by-Step Solution

Solution:

Step 1: Identify event-driven communication
Event-driven means a service publishes events to a broker without waiting for immediate replies.
Step 2: Match options to event-driven style
Only publishing to a message broker and continuing processing fits event-driven communication.
Final Answer:
Service A publishes an event to a message broker and continues processing -> Option B
Quick Check:
Publish and forget = C [OK]

Quick Trick: Event-driven means publish and continue, not wait [OK]

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