Course Outline

🔹 Day 1: Scalable Architecture and Component Patterns

Session 1: Component Design for Maintainability

• Presentational vs. container components
• Compound component pattern
• Controlled vs uncontrolled components
• Custom hooks for logic reuse

Session 2: Advanced React Patterns

• Render props, higher-order components (HOC)
• Memoization: React.memo, useMemo, useCallback
• Context API in complex component trees

Session 3: Modular Architecture & Folder Structure

• Feature-based project organization
• Reusable components and shared utilities
• Building a scalable design system

Lab Activities:

• Refactor a monolithic React component into modular, reusable parts
• Create and reuse custom hooks
• Organize a project using a scalable folder structure

🔹 Day 2: State Management, Routing & Data Fetching

Session 1: Scalable State Management

• When to use Context, Redux, Zustand, or Jotai
• Redux Toolkit best practices
• Normalizing and persisting state
• Cross-component state with Zustand or Recoil

Session 2: React Router & Navigation Strategies

• Nested routes and dynamic routing
• Route guards and role-based access
• Layout components and lazy-loading routes

Session 3: Data Fetching and API Integration

• Fetching strategies: fetch, Axios, React Query
• Caching, pagination, and optimistic updates
• Error boundaries and fallback UIs

Lab Activities:

• Build and configure Redux with slices and selectors
• Implement protected routes and lazy-loaded components
• Integrate a REST API using React Query

🔹 Day 3: Performance Optimization, Testing & Deployment

Session 1: Performance Optimization Techniques

• Avoiding re-renders with memoization and key strategies
• Virtualized lists with react-window
• Code splitting and dynamic imports

Session 2: Testing React Applications

• Unit testing with Jest and React Testing Library
• Integration tests and mocking API calls
• CI/CD integration for test automation

Session 3: Deployment and Production Practices

• Environment-based configuration
• Static vs dynamic hosting (Vercel, Netlify, Firebase, etc.)
• Monitoring and error logging (Sentry, LogRocket)

Lab Activities:

• Profile a React app and eliminate unnecessary re-renders
• Write tests for components and hooks
• Deploy a production-ready app using Vercel or Firebase