Apollo Memory Debug

index.js

require('isomorphic-fetch');
const express = require('express');
const { makeExecutableSchema } = require('graphql-tools');
const graphqlHTTP = require('express-graphql');

const books = [
  { title: "Harry Potter and the Sorcerer's stone", author: "J.K. Rowling" },
  { title: "Jurassic Park", author: "Michael Crichton" },
];

const typeDefs = `
  type Query { books: [Book] }
  type Book { title: String, author: String }
`;

const resolvers = {
  Query: { books: () => books },
};

const schema = makeExecutableSchema({ typeDefs, resolvers });

const app = express();

app.use('/graphql', graphqlHTTP({
  schema,
  graphiql: true
}));

const { ApolloClient } = require('apollo-client');
const { HttpLink } = require('apollo-link-http');
const { InMemoryCache } = require('apollo-cache-inmemory');
const gql = require('graphql-tag');

const client = new ApolloClient({
  link: new HttpLink({ uri: 'http://localhost:3000/graphql' }),
  cache: new InMemoryCache()
});

const query = gql`
    query Query {
        books {
            title
            author
        }
    }
`;

app.use('/test', (req, res) =>
    client
        .query({ query })
        .then(({ data }) => {
            console.log('Queries', client.queryManager.queries);
            res.send(data).end();
        })
        .catch((err) => {
            console.error('Error', err);
            res.status(500).end();
        })
);

app.listen(3000, () => {
    console.log('API available on on port 3000. Press Ctrl+C to stop it.');
});

package.json

{
  "dependencies": {
    "apollo-cache-inmemory": "1.1.9",
    "apollo-client": "2.2.5",
    "apollo-link-http": "1.5.3",
    "express": "4.16.2",
    "express-graphql": "0.6.12",
    "graphql": "^0.12",
    "graphql-tag": "2.8.0",
    "graphql-tools": "2.21.0",
    "isomorphic-fetch": "2.2.1"
  }
}