Most commonly Mac users want to delete data from a cache because they are running out of space on their Mac and assume that clearing their cache could recover a few gigabytes. There are a few reasons why you might want to delete or clear cached data. There is another kind of cached data that is the result of sandboxing between apps, but this data is removed when you restart your Mac (which you should do regularly: see Should I shut down my Mac every night?). Because it’s connected to the operating system we would recommend against deleting anything from your system cache, unless you are using a specific tool to do so.ĭeleting data from your any of your Mac’s caches is a risky business if you don’t know what you are doing, but even more so when it comes to system cache as you could accidentally erase files that ensure your Mac runs smoothly. System cache, as you’d probably expect, is where the data created by macOS that helps your Mac run smoothly is stored.
App data can take a lot of space up and if you are no longer using the app you are unlikely to require the cached data that could still be lurking on your Mac. Similarly if you play games on your Mac you could find you are losing space to game saves. For example, if you work with high-resolution images, or large video files, your computer could be storing a lot of data related to the edits you make. Again, this sounds beneficial, but there are disadvantages. Application cache, sometimes referred to as user cache, includes data associated with your apps that is saved so that it doesn’t have to be loaded up every time you use the application, this means your applications can work faster. There are two other kinds of cache: system cache and application cache. The latter may be a concern for privacy reasons. One disadvantage is the fact that you could find yourself browsing an old cached version of a webpage and another is that your browser cache–which includes cookies and trackers–can give websites and advertisers information about you as you browse the web.
This cache contains the data that gets downloaded to your Mac and is saved so that the next time you visit the same website some of the data is already downloaded and it won’t take so long to load up the page.Īmong other things browser cache means you can browse the web faster, which sounds like a good thing, but there are quite a few disadvantages too. You have probably heard of the cache associated with web browsers.
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