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Developer Advocate

Web / Mobile / VR / AR / IoT

GDE, author, consultant

What is GraphQL


A query language for your API

What's wrong with REST

Resfull API

The core idea is to have a URL for every resource

RESTfull API problems

Description of resource is coupled to implementation



chaining requests to server to get needed data

So how does GraphQL solve it

Avoid over-fetching

Prevent multipe API calls

Lesser communication with API developers



How do you start?

What is Hasura

open source and free engine that gives you auto-generates real-time GraphQL API on top of new or existing Postgres database


  • Can be deployed to any cloud or run locally
  • Compatible with all Authentication solutions
  • Can run on top of new or existing Postgres database
  • Supports Postgres addons (PostGIS, TimescaleDB)
  • Auto-generates GraphQL api
  • GraphQL queries are compiled to performant SQL statements using native Postgres features


  • Comes with hasura-cli which has awesome tools like migrations and more
  • Can work with custom SQL statements
  • Has configurable access controls for data
  • Can be connected to your own GraphQL server (does schema stitching)
  • Has eventing system which enables to trigger serverless functions Architecture

How to get started with Hasura

  • Go to

  • Click on Get started with Heroku

  • Click on

  • Enter your app name

Let's see it in action

Hasura Console overview

Hasura Console overview

  • GraphiQL - run your queries in in-browser IDE
  • Data - manage your data, access control, relations, permissions
  • Remote Schemas - stitch GraphQL schema of your custom GraphQL server
  • Event Triggers - connect your serverless functions

GraphiQL tab - use for development

  • Set endpoint headers
  • Execute queries and mutations
  • Analyse queries

Data tab - data management interface

  • View and insert data into db
  • create and modify tables
  • Create relationships
  • set permissions and access control
  • execute custom sql statements

Remote Schemas tab

stitch your custom GraphQL server schema

Event triggers

  • connect custom webhooks to database events to execute serverless functions
  • set retry logic
  • forward custom headers to webhook



Run hasura locally on top of existing postgres

Want to learn more?

React, Vue, Angular, React Native,

iOS, Android, Flutter, Elm, ReasonML

Thank You


The new modern app

By vladimirnovick

The new modern app

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