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Scalable Application Structure & Engineering Practices

FRONTEND ARCHITECTURE

Frontend Architecture & Engineering Practices

A practical overview of how I structure React and Next.js applications, organize features, manage server state, integrate APIs, and build reusable interfaces for scalable web products.

High-Level Frontend Architecture

LAYER 1: APPLICATION
Next.js / React Application

Route-based application structure with reusable layouts, pages, components, and clear separation between client and server responsibilities.

LAYER 2: DATA & STATE
TanStack Query + Application State

Server-state fetching, caching, mutations, invalidation, and predictable client-side state management for API-driven applications.

LAYER 3: API & SERVICES
REST APIs + Service Layer

Centralized API communication using Axios and service abstractions for authentication, CRUD operations, error handling, and backend integration.

LAYER 4: UI SYSTEM
Reusable Components + Tailwind CSS

Reusable UI primitives, responsive layouts, consistent design patterns, accessible interactions, and maintainable styling conventions.

Feature-Oriented Project Structure

I organize applications around reusable components, domain features, shared utilities, and clear application boundaries. The exact structure adapts to the size and requirements of each project.

src/
├── app/ or pages/           # Application routes
├── components/              # Shared and reusable UI
│   ├── ui/                  # Reusable interface primitives
│   ├── layout/              # Navigation and layout components
│   └── shared/              # Cross-feature components
├── features/                # Domain and business features
├── hooks/                   # Reusable React hooks
├── services/                # API and external service layer
├── lib/                     # Shared configuration and utilities
├── providers/               # Application providers
├── types/                   # Shared TypeScript types
├── utils/                   # General utility functions
└── styles/                  # Global styling and design tokens