GraphQL 

for the impatient

Julián Duque

Developer and Educator

https://julianduque.co - @julian_duque

Introduction

GraphQL

• Query and manipulation language specification for APIs
  • Just one API endpoint
  • Multiple queries defined by a schema
• Alternative to REST
• Developed by Facebook in 2012
• Released to the public in 2015

Schema & Types

Scalar Types

• Int: A signed 32-bit integer
• Float: A signed double-precision floating-point value
• String: A UTF-8 character sequence
• Boolean: true or false
• ID: A scalar representing a unique identifier
•  

Custom scalars can also be created, examples are:

• Date
• JSON

Object Types

Queries & Mutations

Queries

Mutations

Resolvers

Query Resolvers

Mutation Resolvers

Running GraphQL

Apollo Server

Thank You! 😄

Slides and code can be found in:

https://julianduque.co/graphql-impatient