Foreword: I am completely new to GraphQL so I am just trying to figure out what is the best practice when working with it
So I need to call a GraphQL API written in Nestjs (more specifically, from a Rails server).
There is this nice gem graphql-client that makes a Client to communicate with GraphQL API.
In order for it to work, it needs a Schema before initializing the Client. It also suggest that we should fetch the schema and dump it into a file before initializing the Client
I also notice that, when I paste the GraphQL URL to postman, it pre-fetch the schema.
A quick code snippet worked. But later I found out that I can just use an API gem (like HTTParty) and make a POST request with correct body in order to call the GraphQL API
I thought: "maybe I should investigate how other JS tools work with GraphQL because Rails may behave differently". I then read this article. In short, we can just use an API library (like axios) to make request to the GraphQL server, without the need or pre-fetching schema.
My questions is: Why do we need to pre-fetch the schema before making request? What is the advantages of that? If there is any articles I should read in order to have a better understanding of this, please kindly provide me.
