[Solved] Consider this code snippet in a microservices system using eve... // Service B listens for 'OrderCreated' and processes the order asynchronously What is the main benefit of this event-based approach? | Microservices

Microservices - Event-Driven Architecture

Consider this code snippet in a microservices system using events:

eventBus.publish('OrderCreated', { orderId: 123 });
// Service B listens for 'OrderCreated' and processes the order asynchronously

What is the main benefit of this event-based approach?

AService A directly calls Service B's function to create the order

BService A waits for Service B to finish processing before continuing

CService B must be available before Service A publishes the event

DService A and Service B are loosely coupled and can operate independently

Step-by-Step Solution

Solution:

Step 1: Analyze event publishing behavior
Service A publishes an event and does not wait for Service B to process it immediately.
Step 2: Understand coupling impact
This means Service A and Service B do not depend on each other's availability or internal logic, enabling loose coupling.
Final Answer:
Service A and Service B are loosely coupled and can operate independently -> Option D
Quick Check:
Asynchronous event handling = A [OK]

Quick Trick: Events let services work independently without waiting [OK]

Common Mistakes:

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