E-Commerce Development E-Commerce Development APIs and Integrations 2

Question 1

Which approach allows a single GraphQL query to fetch product data, inventory, and pricing in one network round-trip?

Accepted Answer

GraphQL query with multiple fields

Answer

GraphQL lets clients specify exactly the fields they need across multiple resource types in a single query, reducing over-fetching and multiple round-trips.

Question 2

What is the role of an API gateway in a microservices-based e-commerce architecture?

Accepted Answer

It acts as a single entry point that routes requests to the appropriate microservice

Answer

An API gateway serves as the single entry point for all client requests, routing them to appropriate microservices while handling cross-cutting concerns like authentication, logging, and rate limiting.

Question 3

In e-commerce integrations, what does 'idempotency' mean for an API endpoint?

Accepted Answer

Making the same request multiple times produces the same result as making it once

Answer

An idempotent API endpoint ensures that sending the same request multiple times (e.g., due to network retries) does not cause duplicate actions like charging a customer twice.

Question 4

What integration method does Shopify use to allow developers to extend its checkout functionality?

Accepted Answer

Shopify Functions and Checkout Extensibility APIs

Answer

Shopify provides Checkout Extensibility APIs and Shopify Functions, which allow developers to customize the checkout experience without forking or modifying Shopify's core codebase.

Question 5

Which type of integration allows an e-commerce platform to sync inventory in real time with a warehouse management system (WMS)?

Accepted Answer

Event-driven integration using webhooks or message queues

Answer

Event-driven integration using webhooks or message queues (e.g., RabbitMQ, Kafka) enables real-time inventory synchronization between the e-commerce platform and the WMS as stock changes occur.

E-Commerce Development Practice Test

E-Commerce Development Practice Test

E-Commerce Development E-Commerce Development APIs and Integrations 2