@envelop/dataloader

@envelop/dataloader

This plugin helps you to create a new DataLoader instance
every time your context is being built. The created instance is injected into the context with the
name you wish to use.

Getting Started

``
yarn add dataloader @envelop/dataloader
`

Usage Example

`ts
import DataLoader from 'dataloader'
import { execute, parse, specifiedRules, subscribe, validate } from 'graphql'
import { envelop, useEngine } from '@envelop/core'
import { useDataLoader } from '@envelop/dataloader'

const getEnveloped = envelop({
plugins: [
useEngine({ parse, validate, specifiedRules, execute, subscribe }),
// ... other plugins ...
useDataLoader('users', context => new DataLoader(keys => myBatchGetUsers(keys)))
]
})
`

Then, when you need to use it in your resolvers, just take it from the context:

`ts
export const resolvers = {
Query: {
user: (root, args, context, info) => {
return context.users.load(args.id)
}
}
}
``

Notes

There are several ways to create and use DataLoader, please refer to:
https://github.com/graphql/dataloader#caching-per-request for more details.