Open & Close a Realm - Flutter SDK

Open a Read-Only Realm

You can open an existing realm in read-only mode. To open a read-only realm, add readOnly: true to your Configuration object.

You can only open existing realms in read-only mode. If you try to write to a read-only realm, it throws an error.

var config = Configuration([Car.schema], readOnly: true);
realm = Realm(config);

Open an In-Memory Realm

To create a realm that runs entirely in memory without being written to a file, add inMemory: true to your Configuration object. In-memory realms cannot also be read-only.

var config = Configuration([Car.schema], inMemory: true);
var realm = Realm(config);

Set Custom FIFO Special Files

Set a value for Realm's FIFO special files location. Opening a realm creates a number of lightweight FIFO special files that coordinate access to the realm across threads and processes. If the realm file is in a location that doesn't allow for the creation of FIFO special files (such as FAT32 filesystems), then the realm cannot be opened. In this case, Realm needs a different location to store these files. Add fifoFilesFallbackPath: <Your Custom FIFO File Path> to your Configuration object.

This property is ignored if the directory for the realm file allows FIFO special files.

var config =
    Configuration([Car.schema], fifoFilesFallbackPath: "./fifo_folder");
var realm = Realm(config);