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Modern Web & GraphQL Consulting

Architecture consulting for replacing monolithic REST structures with scalable GraphQL federations.

  • GraphQL
  • Node.js
  • TypeScript
  • React
  • PostgreSQL
  • Apollo

The Challenge

A development team struggled with the classic limitations of REST APIs: "Over-fetching" (loading too much data) and "Under-fetching" (too many requests for a single view). Additionally, the frontend (React) was growing faster than the backend, leading to wait times for new endpoints.

The Solution

Introduction of a GraphQL layer as a central Data Gateway. This decoupled frontend from backend development and enabled declarative data fetching strategies.

Technical Implementation

  • Backend: Setup of an Apollo Server using Node.js and TypeScript. Strict typing ensures adherence to API contracts (schemas).
  • Database: Optimization of SQL queries via the Dataloader pattern to solve the "N+1 problem" with nested queries.
  • Frontend: Integration of Apollo Client in React with automatic caching and state management.

Key Features

  • Schema-Driven Development: The GraphQL schema serves as "Single Source of Truth" and documentation simultaneously.
  • Performance: Mobile clients load exactly only the JSON fields they display – saving bandwidth and battery.
  • Real-time Data: Use of Subscriptions for live updates (e.g., chat features or status tickers).

The Result

Frontend performance improved significantly. The team could iterate features faster as frontend developers no longer had to wait for new backend endpoints but could recompose existing graphs.