Problem Statement
How does the Redux middleware chain work and in what order are middleware executed?
Explanation
Redux middleware are composed into a chain where each middleware can intercept actions before they reach the reducer, with execution flowing from first to last middleware then to the reducer, and responses flowing back in reverse order. When an action is dispatched, it passes through each middleware in the order they were added to the store, and each middleware can inspect the action, dispatch new actions, call the next middleware, delay execution, or stop the chain entirely. The middleware pattern allows you to inject custom behavior at different points in the action dispatch lifecycle, with common middleware like thunk handling functions early and logger middleware typically placed at the end to see all actions.
