In a large microservices system, why does using events to decouple services improve system scalability and fault tolerance?

hard📝 Trade-off Q15 of 15

Microservices - Event-Driven Architecture

ABecause events allow services to process messages independently and retry on failure

BBecause events force all services to run on the same server

CBecause events require services to be tightly synchronized

DBecause events eliminate the need for any service monitoring

Step-by-Step Solution

Solution:

Step 1: Understand event-driven processing benefits
Events let services handle messages independently, so they can scale by adding more instances and retry failed processing without blocking others.
Step 2: Analyze impact on fault tolerance and scalability
This independence isolates failures and allows the system to continue working smoothly, improving overall reliability and scalability.
Final Answer:
Because events allow services to process messages independently and retry on failure -> Option A
Quick Check:
Independent processing and retries = A [OK]

Quick Trick: Events enable independent retries and scaling per service [OK]

Common Mistakes:

MISTAKES

Master "Event-Driven Architecture" in Microservices

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Microservices Quizzes