Intellicode/graphql-resolver-cache

Caching for Graphql Resolvers

Graphql resolver cache

Easy wrapper around resolvers to cache results based on root elements and Graphql query arguments. Works best with Apollo Graphql.

Installation

$ npm install graphql-resolver-cache --save

Configuration

Add a cache to your Graphql middleware:

import express from 'express';
import bodyParser from 'body-parser';
import { graphqlExpress } from 'apollo-server-express';
import { LruCache } from 'graphql-resolver-cache';

const myGraphQLSchema = // ... define or import your schema here!
const PORT = 3000;

const app = express();
const resolverCache = new LruCache();

// bodyParser is needed just for POST.
app.use('/graphql', bodyParser.json(), graphqlExpress({ 
  schema: myGraphQLSchema,
  context: { resolverCache }
}));

app.listen(PORT);

Wrap your resolver in a cache function:

import { withCache } from 'graphql-resolver-cache';
export default {
  User: {
    getFriends: withCache((root, args, context) => { /* logic */ }),
  },
};