Why federation scales GraphQL - Quick Recap

Recall & Review

beginner

What is GraphQL federation?

GraphQL federation is a way to combine multiple GraphQL services into one unified graph, allowing them to work together as a single API.

beginner

How does federation help scale GraphQL APIs?

Federation helps scale GraphQL by letting teams build and maintain separate services independently, which then combine into one graph, making it easier to grow and manage large APIs.

intermediate

Why is dividing a GraphQL API into smaller services beneficial?

Dividing a GraphQL API into smaller services allows teams to work on different parts without conflicts, speeds up development, and improves reliability by isolating issues.

intermediate

What role does the gateway play in GraphQL federation?

The gateway acts like a traffic controller that receives client requests and routes them to the right service, then combines the results into one response.

beginner

How does federation improve team collaboration?

Federation allows different teams to own and update their parts of the API independently, reducing coordination overhead and speeding up changes.

What does GraphQL federation primarily enable?

A Encrypting GraphQL queries

B Replacing REST APIs with GraphQL

C Caching GraphQL responses

D Combining multiple GraphQL services into one API

Federation allows multiple GraphQL services to work together as a single API.

In federation, what is the main purpose of the gateway?

A To route requests to the correct service and combine responses

B To store data

C To authenticate users

D To generate GraphQL schemas

The gateway routes client requests to the right services and merges their responses.

How does federation help when multiple teams work on a GraphQL API?

A It allows teams to own separate services independently

B It forces all teams to work on the same codebase

C It limits the number of queries teams can write

D It merges all team code into one file

Federation lets teams manage their own services, improving collaboration and reducing conflicts.

Which of these is NOT a benefit of GraphQL federation?

A Improved API scalability

B Independent service deployment

C Automatic database backups

D Faster development cycles

Federation does not handle database backups; it focuses on API composition and scaling.

What happens if one federated service fails?

A The entire API stops working

B Only the part of the API from that service is affected

C The gateway automatically fixes the service

D The client receives no response

Failure in one service affects only its part, improving overall API reliability.

Explain in your own words why federation helps GraphQL scale better.

Think about how dividing work and combining results helps big projects.

Describe the role of the gateway in a federated GraphQL architecture.

Imagine the gateway as a traffic controller for API requests.