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Offline address book not updating

See our documentation on threading for some of the reasons why this architecture enables some of Realm’s great performance, concurrency and safety advantages.In order to avoid making expensive system calls, Realm files are rarely shrunk at runtime.

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This is a useful option if you need flexible data access without the overhead of disk persistence.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.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.In order to deal with this, you may set the The compaction operation works by reading the entire contents of the Realm file, rewriting it to a new file at a different location, then replacing the original file.

Depending on the amount of data in a file, this may be an expensive operation.

For example, if you have two teams working on different components of your application which both use Realm internally, you may not want to have to coordinate migrations between them.

You can do this by setting the Realm works in such a way that the size of a Realm file is always larger than the total size of the objects stored within it.

instance could sometimes fail if resources are constrained.

In practice, this can only happen the first time a Realm instance is created on a given thread.

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