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

Strangler Fig

Answer

Sidecar

Answer

Bulkhead

Question 2

What is the primary purpose of the Saga pattern?

Accepted Answer

Manage data consistency across services without distributed transactions

Answer

Cache responses at the gateway

Answer

Balance load between instances

Answer

Encrypt inter-service traffic

Question 3

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

Accepted Answer

By exchanging events without a central controller

Answer

Through a central orchestrator service

Answer

Via synchronous REST chains

Answer

Using a shared database lock

Question 4

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

Accepted Answer

API Gateway

Answer

Event Sourcing

Answer

CQRS

Answer

Circuit Breaker

Question 5

What problem does the Circuit Breaker pattern primarily solve?

Accepted Answer

Preventing cascading failures from a failing dependency

Answer

Storing event history

Answer

Splitting reads and writes

Answer

Discovering service instances

Question 6

The Database-per-Service pattern primarily promotes what?

Accepted Answer

Loose coupling and independent data ownership

Answer

Shared schema reuse

Answer

Cross-service joins

Answer

Centralized transaction control

Question 7

Which pattern lets you incrementally migrate a monolith by intercepting and replacing functionality over time?

Accepted Answer

Strangler Fig

Answer

Bulkhead

Answer

Sidecar

Answer

Ambassador