How to build a simple Express.js and GraphQL API with Apollo Server

Express.js with Apollo Server provides a clear and maintainable path for building GraphQL APIs in Node.js.

Initial setup

1. Initialize a Node.js project.
2. Install express, graphql, and @apollo/server.
3. Define a schema with types and resolvers.
4. Attach Apollo middleware to your Express application.

Design recommendations

• Keep resolvers focused and delegate business logic to services.
• Validate inputs before data access.
• Handle errors consistently and return clear messages.
• Add pagination and filtering as your schema grows.

Final note

A well-organized GraphQL layer can simplify frontend development and improve long-term API evolution.