Microservices Microservice Design Patterns 2

Question 1

Which pattern decomposes a monolith by grouping services around distinct business capabilities?

Accepted Answer

Decompose by business capability

Answer

Decompose by business capability aligns each service with a function the business performs.

Question 2

What is the primary purpose of the Saga pattern?

Accepted Answer

Manage data consistency across services without distributed transactions

Answer

Saga coordinates a sequence of local transactions with compensating actions to maintain consistency.

Question 3

In a choreography-based saga, how do services coordinate?

Accepted Answer

By exchanging events without a central controller

Answer

Choreography relies on each service reacting to events published by others.

Question 4

Which pattern provides a single entry point that routes client requests to backend services?

Accepted Answer

API Gateway

Answer

An API Gateway aggregates and routes requests, handling cross-cutting concerns.

Question 5

What problem does the Circuit Breaker pattern primarily solve?

Accepted Answer

Preventing cascading failures from a failing dependency

Answer

A circuit breaker stops calls to a failing service to avoid resource exhaustion and cascading failure.

Microservices Practice Test