What are the best practices for output caching in MVC?

What are the best practices for output caching in MVC?

Output caching in MVC can significantly improve performance. Key practices include using the OutputCache attribute, setting appropriate cache duration, and caching at different levels (action, controller, or page).

Can you explain how the OutputCache attribute works?

The OutputCache attribute allows you to specify caching settings for a controller action. You can define parameters like Duration, VaryByParam, and VaryByHeader to control how the output is cached.

What are the benefits of using output caching?

Output caching reduces server load, improves response times, and enhances user experience by serving cached content instead of generating it on every request.

Are there any downsides to using output caching?

Yes, potential downsides include serving stale data if the cache isn't invalidated properly and increased memory usage if not managed correctly.

How can I invalidate the cache when data changes?

You can invalidate the cache by using cache dependencies, setting cache expiration, or programmatically clearing the cache when data changes.