What is the difference between cache-in validation and cache-out?

What is the difference between cache-in validation and cache-out?

Cache-in validation checks data before storing it in the cache, while cache-out invalidation removes stale data from the cache.

Can you give me an example of when to use cache-in validation?

Sure! Use cache-in validation when you want to ensure that the data being cached is always fresh, like in a stock price application.

What are the advantages of using cache-out invalidation?

Cache-out invalidation is beneficial for reducing memory usage and ensuring that outdated data is not served to users.

Are there any scenarios where one is preferred over the other?

Yes, cache-in validation is preferred for frequently changing data, while cache-out is better for static data that rarely changes.