Express integration in GraphQL - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Express integration in the context of GraphQL?

Express integration means using the Express web server to handle GraphQL requests, allowing you to serve a GraphQL API through Express routes.

beginner

Which Express middleware is commonly used to connect GraphQL with Express?

The middleware called express-graphql is commonly used to connect GraphQL with Express, enabling a GraphQL HTTP server.

intermediate

How do you set up a basic GraphQL endpoint in Express?

You import <code>express-graphql</code>, create an Express app, then use <code>app.use('/graphql', graphqlHTTP({ schema, rootValue, graphiql: true }))</code> to set up the GraphQL endpoint.

beginner

What is the purpose of enabling graphiql: true in Express GraphQL middleware?

Setting graphiql: true enables an interactive in-browser tool to test and explore your GraphQL API easily.

intermediate

Can Express integration with GraphQL handle both queries and mutations?

Yes, Express integration with GraphQL can handle both queries (to fetch data) and mutations (to modify data) through the same endpoint.

Which package is used to integrate GraphQL with Express?

A graphql-server-express

B express-graphql

C express-graphql-server

D graphql-express

The correct package to integrate GraphQL with Express is express-graphql.

What does the graphiql option enable in Express GraphQL middleware?

A An interactive GraphQL IDE in the browser

B Automatic schema generation

C Database connection pooling

D Logging of GraphQL queries

Setting graphiql: true enables an interactive GraphQL IDE in the browser.

Which Express method is used to add the GraphQL endpoint?

A app.post()

B app.get()

C app.use()

D app.listen()

The app.use() method is used to add middleware like the GraphQL endpoint.

In Express GraphQL integration, what is the role of the schema?

A Defines the data types and operations available

B Stores user sessions

C Handles HTTP requests

D Manages database connections

The schema defines the data types and operations (queries and mutations) available in GraphQL.

Can you use Express GraphQL middleware to serve multiple GraphQL endpoints?

A No, only one endpoint is allowed

B Only with additional plugins

C Only if you use different ports

D Yes, by using <code>app.use()</code> with different paths

You can serve multiple GraphQL endpoints by using app.use() with different paths.

Explain how to set up a GraphQL API using Express from scratch.

Think about the steps from installing packages to running the server.

Describe the benefits of integrating GraphQL with Express.

Consider why Express is a good choice for serving GraphQL.