What state managers were used? What is bad about Redux?

Used various state managers, including Redux, MobX, Context API, and Recoil.

Problems with Redux:

• Large amount of boilerplate code (actions, reducers), which complicates maintenance.
• Complexity in setup and understanding for beginners.
• Rigid structure that can be excessive for small applications.
• Performance can suffer with large states due to frequent re-renders.

Example of a simple reducer in Redux:

const initialState = { count: 0 };
function counterReducer(state = initialState, action) {
  switch(action.type) {
    case 'INCREMENT':
      return { count: state.count + 1 };
    default:
      return state;
  }
}

In modern projects, more lightweight or declarative solutions are often chosen, such as React Context with hooks or Recoil, which are easier to use and scale.