GraphQL vs REST APIs in Modern Web Development: Over-Fetching, Caching & Performance Tradeoffs (2026)

GraphQL shines when frontend clients (mobile apps, web dashboards, smart TVs) have radically different data requirements, allowing clients to request the exact nested fields needed in a single HTTP request.

Because all GraphQL queries are sent as POST requests to a single `/graphql` endpoint, native HTTP edge caching via standard CDNs is much harder than caching REST `GET` requests with `Cache-Control` headers.

By implementing DataLoader batching, which groups multiple nested child queries into a single batch SQL `WHERE id IN (...)` statement.