Subsequent accesses to a Realm from the same thread will reuse a cached instance and will always succeed.

To handle errors when first accessing a Realm on a given thread, use Swift’s built-in error handling mechanism: database files, and won’t cause any erroneous behavior if their parent database file is deleted or replaced.

However, be sure to comply with App Store guidelines, keeping your app under 200MB.

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Instead, they grow by specific size increments, with new data being written within unused space tracked inside the file.

However, there may be situations in which a significant portion of a Realm file is comprised of unused space.

If you’re looking to use Realm from Objective‑C, or from mixed Objective‑C & Swift apps, please see Realm Objective‑C instead.

The Realm Objective‑C and Realm Swift APIs are not interoperable and using them together is not supported. If you need help finding your app’s Realm file, check this Stack Overflow answer for detailed instructions.

You can find example applications for both i OS and OS X in our release zip under to import Realm Swift and make it available for use with your code. Because writing to the “Documents” directory is prohibited on tv OS, the default Realm location is set to .

However, please be mindful that tv OS can purge files in the “Caches” directory at any point, so we encourage you to rely on Realm as a rebuildable cache rather than storing important user data.

Please respect Apple’s i OS Data Storage Guidelines, which recommend that if documents that can be regenerated by the app should be stored in the property (and vice-versa).

The framework is responsible for managing how synchronized Realms are cached or stored on disk.

When reporting Realm issues, please be sure to include these auxiliary files along with your main You can refer to our migration sample app for an example of how to use a bundled Realm file.

In some scenarios you may wish to limit which classes can be stored in a specific Realm.

For example, suppose you have an application where users have to log in to your web backend, and you want to support quickly switching between accounts.