Apollo Client with GraphQL Federation

Apollo Federation acts as a centralized gateway that stitches the Shopify Storefront API together with your custom microservices. This allows your frontend React applications to query both Shopify product data and custom backend database records in a single network request.

Yes, you typically deploy a gateway built in Node.js that defines the relationships between your various GraphQL subgraphs. This central server handles the query planning and routes the specific data requests to either Shopify or your internal CMS services.

Apollo Client uses a normalized cache by default, which helps store fetched Shopify Storefront data directly in the browser's memory. This drastically reduces unnecessary network calls when users navigate between product pages or revisit checkout flows.

While the gateway adds an extra network hop, it actually optimizes overall performance by batching multiple frontend requests into one consolidated call. It queries the Shopify servers, processes the data, and returns a unified JSON payload faster than making sequential REST API calls.