Module Overview
Explore Context API patterns for app-level state, data-fetch lifecycles, caching strategies, optimistic updates, and handling loading/error states gracefully. Focus on building resilient UX.
Learning Objectives
- Use Context to share state across components and understand alternatives for larger apps.
- Implement clean data-fetch lifecycles with caching and optimistic UI patterns.
- Handle loading/error states and build resilient user experiences.
Lesson-by-Lesson Breakdown
Context & provider patterns: when and how to use them.
Data fetching lifecycles and caching reasoning.
Optimistic updates and rollback strategies.
Error boundaries and graceful degradation patterns.
Light-weight strategies for client-side caching and invalidation.
Hands-on Activities & Deliverables
Activities
Build a dashboard that fetches data, shows loading/error states, and caches data between views.
📦 Deliverable
Repo + short demo video showing caching/optimistic behavior.
Required Tools & Readings
Conceptual guides to SWR/React Query, Context examples.
Assessment & Rubric
- Correctness of state flows40%
- UX resilience30%
- Code structure30%
Prerequisites
React basics (Module 3).
Parent-Friendly Value
Students learn to build apps that feel fast and robust to users.