mercurius
Mercurius is a GraphQL adapter for Fastify
Features:
- Caching of query parsing and validation.
- Automatic loader integration to avoid 1 + N queries.
- Just-In-Time compiler via graphql-jit.
- Subscriptions.
- Federation support via @mercuriusjs/federation, including Subscriptions.
- Gateway implementation via @mercuriusjs/gateway, including Subscriptions.
- Batched query support.
- Customisable persisted queries.
Docs
Install
npm i fastify mercurius graphql
yarn add fastify mercurius graphql
The previous name of this module was fastify-gql (< 6.0.0).
Quick Start
'use strict'
const Fastify = require('fastify')
const mercurius = require('mercurius')
const app = Fastify()
const schema = `
type Query {
add(x: Int, y: Int): Int
}
`
const resolvers = {
Query: {
add: async (_, { x, y }) => x + y
}
}
app.register(mercurius, {
schema,
resolvers
})
app.get('/', async function (req, reply) {
const query = '{ add(x: 2, y: 2) }'
return reply.graphql(query)
})
app.listen({ port: 3000 })
Examples
Check GitHub repo for more examples.
Acknowledgements
The project is kindly sponsored by:
The Mercurius name was gracefully donated by Marco Castelluccio.
The usage of that library was described in https://hacks.mozilla.org/2015/12/web-push-notifications-from-irssi/, and
you can find that codebase in https://github.com/marco-c/mercurius.
License
MIT