GraphQL Foundations
Query and build GraphQL APIs with schemas, resolvers and mutations.
What you'll learn
- Write GraphQL queries and mutations
- Define a schema with types
- Write resolvers
- Batch database calls with DataLoader
About this course
You query a public GraphQL API, then build your own with Apollo Server. You learn schemas, resolvers, mutations and how to avoid N+1 problems.
Course curriculum
4 modules and 12 lessons over 3 weeks. Plan for about 9 learning hours.
01QueryingWeek 1 · 3 lessons
- Queries
- Variables
- Fragments
02SchemasWeek 1 · 3 lessons
- Types
- Queries and mutations
- Inputs
03ResolversWeek 2 · 3 lessons
- Resolver functions
- Context
- Errors
04PerformanceWeek 3 · 3 lessons
- N+1 problem
- DataLoader
- Exercise review
Project
GraphQL API. A GraphQL API for a bookstore with queries, mutations and batched loading.
Who this course is for
Developers who know REST and want to learn GraphQL.
Prerequisites
You know JavaScript and REST APIs.
What's included
- 120-day course access
- Step-by-step lessons
- Practice files
- Reusable code templates
- A graded final exercise
- A digital completion certificate
Learning format
Self-paced practical course, part of our self-paced courses. Graded final exercise with written feedback.
Access and delivery
- Enrollment is activated within 15 minutes after payment.
- Final exercise feedback is delivered within 2 business days of submission, and the completion certificate is issued within 2 business days after passing the final exercise.
Certificate
You receive a digital completion certificate. Final exercise feedback is delivered within 2 business days of submission, and the completion certificate is issued within 2 business days after passing the final exercise.
Frequently asked questions
When does access start?
Enrollment is activated within 15 minutes after payment.
Is payment taken on this website?
No. After you submit your enrollment request, we reply by email with payment details and enrollment confirmation.
Does this course guarantee a job or income?
No. It is an education and training service and does not include employment, income or placement guarantees.
Can I cancel?
Our Refund and Cancellation Policy lists the terms for self-paced course programs.
