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Provider Patterns and State Design

Explore how to manage state effectively in React 19 by understanding provider patterns and state colocation. Learn to design scalable state structures with clear domain responsibilities to maintain predictable and efficient applications as they grow.

As applications scale, managing where state lives becomes one of the most important architectural decisions. At this stage, the challenge is not how to create a state, but where to place it so that the system remains predictable, efficient, and maintainable. This lesson builds a mental model for provider patterns, explains state colocation, and shows how to design state structure in a scalable way.

What is a provider?

A provider is a component that supplies data to its child components through context. It acts as a boundary where the state is defined and ...