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![]() ![]() Instead, the app only needs to download changed or new files. ![]() If a copy of a file is stored in the cache, then the app doesn't need to waste time, battery power, and other resources downloading it a second time. There's a lot of efficiency in only downloading files once. Not only does this allow everything to run faster as previously mentioned, but in some cases it can allow apps to work "offline." For example, if you don't have internet access, an app can rely on cached data to continue to work even without a connection. To help improve performance, apps store recently and frequently used data to the cache. By storing local copies of web site files, for example, your browser only needs to download that information the first time you visit, and can load the local files on subsequent visits. The key benefit of a cache is that it improves the performance of the system. From a user standpoint, there are three main benefits to caches, including:
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