Quickstart: Wrap the public API in your GraphQL schema

Resolve from REST

const resolvers = {
  Query: {
    products: () =>
      fetch(`${BASE}/products`).then(r => r.json()).then(b => b.data),
    quote: (_, { amount, termMonths }) =>
      fetch(`${BASE}/quote`, {
        method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ amount, term_months: termMonths }),
      }).then(r => r.json()),
  },
};

Batch and cache

Use a per-request DataLoader to dedupe product lookups within one query, and cache the catalogue at the resolver so repeated queries do not each hit the REST API.