Should I delete cache with a timer or?

Question

I've got a simple question

I made an application similar to instagram, the only difference is that it has more stories&posts because there's no following system.

I do cache the images and videos, but should I delete the caches with a timer?

It is lots of videos and images.

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Or is it enough to cache and when terminating the app clear the caches

Answer 1

If you're using standard caching mechanisms like NSCache , the OS will automatically clean it when it needs more memory for other applications. You don't need to worry about cleaning cache manually, unless you need some app specific behaviour.