Node.js API: Microservices

Backend Microservices. Includes Event-Loop Optimization, Microservices Pattern, GraphQL Implementation and Real-Time WebSockets — delivered by IQDigital's…

A Node.js backend powers your application's APIs, data and real-time features. IQDigital builds Node.js services designed for high concurrency, splits large applications into independently scalable microservices, and adds GraphQL, WebSockets, OpenAPI documentation and JWT or OAuth security.

Who it's for

  • Products with real-time features such as chat, live updates or dashboards
  • Teams whose monolithic backend is hard to change and scale
  • Frontend and mobile teams that need a fast, well-documented API

What is a Node.js backend?

The backend is the brain of your application. IQDigital engineers high-performance, scalable backends using Node.js. We leverage the event-driven, non-blocking I/O model of Node to handle thousands of concurrent connections with minimal overhead, making it ideal for real-time applications and high-traffic APIs. We don't just write endpoints; we architect distributed systems.

How microservices architecture works

We specialize in 'Microservices Architecture.' Instead of a monolithic codebase that is hard to maintain, we break your application into small, independent services (User Auth, Payments, Inventory) that communicate via lightweight protocols. This allows for independent scaling—if your checkout is busy, we scale just the checkout service, not the whole app.

How we govern and secure APIs

We implement rigorous 'API Governance.' We use GraphQL to allow clients to request exactly the data they need, preventing over-fetching. We document everything with Swagger/OpenAPI. We secure your data with JWT (JSON Web Tokens) and OAuth protocols. From real-time WebSockets for chat features to complex data processing pipelines, our Node.js solutions are built to handle the load of the top 0.1%.

What's included

  • Event-Loop Optimization — Handling high concurrency without blocking.
  • Microservices Pattern — Decoupling logic for independent scaling.
  • GraphQL Implementation — Efficient data querying for frontends.
  • Real-Time WebSockets — Bi-directional communication for live features.

How an engagement runs

  1. Diagnose (Week 1) — We find the money before we spend yours.
  2. Build (2–8 weeks) — Senior engineers. Your stack. Weekly proof.
  3. Launch (Go-live) — Released against a baseline, not a hope.
  4. Compound (Ongoing) — The second month should beat the first.

How the work is scoped

  • Engagement: Fixed-scope project

Questions about Node.js API

Why Node.js for the backend?

Its event-driven, non-blocking model handles many concurrent connections with little overhead, which suits real-time applications and high-traffic APIs.

What are microservices?

Small, independent services — for example authentication, payments and inventory — that communicate over lightweight protocols. Each scales on its own, so a busy checkout can scale without scaling the whole app.

Do you build GraphQL or REST APIs?

Both. GraphQL lets clients request exactly the data they need; REST endpoints are documented with Swagger/OpenAPI.

How do you secure APIs?

With JSON Web Tokens (JWT) and OAuth for authentication and authorisation, as part of consistent API governance.

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What IQDigital provides

IQDigital designs, deploys and operates production AI and growth systems for European businesses. Engagements are founder-led, integration-aware and built around measurable operational or commercial outcomes.

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