What are common performance issues with NgRx and how can I resolve them?

What are common performance issues with NgRx and how can I resolve them?

Common performance issues with NgRx include excessive change detection cycles, large state trees, and inefficient selectors. To resolve them, consider using memoized selectors, optimizing state structure, and leveraging the OnPush change detection strategy.

Can you explain how memoized selectors work?

Memoized selectors are functions that cache the results of their computations. When the same inputs are provided, they return the cached result instead of recalculating, which improves performance by reducing unnecessary computations.

What is the OnPush change detection strategy?

The OnPush change detection strategy tells Angular to check a component's view only when its input properties change or when an event occurs within the component. This can significantly reduce the number of checks and improve performance.

Are there tools to help analyze NgRx performance?

Yes, tools like Redux DevTools can help analyze NgRx performance by allowing you to inspect state changes, actions, and the time taken for each action to process.