Real-time GraphQL API in Elixir & Phoenix

Create GraphQL API in Elixir. The language which powers, in one way or another (ErLang) Whatsapp, Discord, Pinterest etc.

We will be using Phoenix Framework, the fantastic MVC framework for developing backends and full stack projects in Elixir. Consider Phoenix more like Express of Node.js but way more cooler of course. Well, Elixir altogether is cooler than any other language I code but nevertheless, one thing at a time.

Architecture

Users

Register User

Login

Get Authenticated User

Logout

Rooms

Create Rooms

Get All Rooms

Delete Room and all of it’s messages

Messages

Post Messages (persisted  to db) to a particular room.

Subscribe to a particular room to get the newly posted message notifications in real time.

Pagination

Cursor Based Pagination for fetching messages so that we don’t give back all the messages of a room at once (which could be of thousands of number as you can imagine).

Protected Routes

Implement private routes to maintain an access control list > what can be accessed and what not. For example, a non authenticated user (guest) should not have access to the following apis

Create Room

Post Message to a Room

etc…

Insomnia & GraphQL Playground

Test the API with Insomnia & GraphQL Playground (For testing Subscriptions), along the way, while developing each route.