GraphQL Intro 101 (part 2)

A conscious introduction to the GraphQL World, part 2.

Intro

In the first part of GraphQL Intro 101, we covered:

• what is GraphQL and some history

• why and how GraphQL started

• use cases and examples

• pros & cons of GraphQL

You can the previous article here: GraphQL Intro 101 (part 1).

In the second part of GraphQL Intro 101, we will dig deeper into the Core Concepts of GraphQL and some high-level architectures in which GraphQL is used.

After reading this article, you’ll learn:

• Core Concepts of GraphQL like Queries, Mutations, Schema Definition Language (SDL), GraphQL Schema, Resolvers

• 3 high-level architectures representing use cases of GraphQL, demonstrating its flexibility

Core Concepts

Queries

Queries are used to read or fetch data. They represent the way clients can request specific data from a GraphQL Server. Unlike REST where multiple endpoints return fixed data structures, a GraphQL query retrieves exactly what …