Angular Route Resolvers: Fetch Data Before Navigation
An Angular Route Resolver pre-fetches data, ensuring it's ready *before* your component renders. Use it to load critical data for a route, like a user profile, to avoid showing a loading spinner. The footgun: a slow resolver blocks navigation entirely.
An Angular Route Resolver is a function that runs before route activation to pre-fetch data. It guarantees data is available the moment a component renders, preventing empty states and loading spinners on the destination page. It's ideal for fetching essential data that a component cannot function without, like loading a specific user's details for a `UserDetail` component. The main trade-off is that a slow resolver blocks navigation, making the UI feel unresponsive until the data is fully loaded.
Read the original → angular.dev
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- #routing
- #frontend
- #data fetching
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