[Home](./index.md) > [server](./server.md) > [PersistenceManager](./server.persistencemanager.md) ## PersistenceManager class Manages persistence of player and global data. When to use: reading or writing persisted data shared across lobbies or per player. Do NOT use for: per-tick state; cache data in memory and write back periodically. **Signature:** ```typescript export default class PersistenceManager ``` ## Remarks This class is a singleton accessible with `PersistenceManager.instance`. Convenience methods are also available on `Player` and `GameServer`. Pattern: load data on join, update in memory, and save on significant events. Anti-pattern: calling persistence APIs every frame. \*\*Category:\*\* Persistence The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `PersistenceManager` class. ## Properties

Property	Modifiers	Type	Description
[instance](./server.persistencemanager.instance.md)	`static` `readonly`	[PersistenceManager](./server.persistencemanager.md)	Singleton instance. \*\*Category:\*\* Persistence

## Methods

Method	Modifiers	Description
[getGlobalData(key, maxRetries)](./server.persistencemanager.getglobaldata.md)		Get global data from the data persistence service.
[setGlobalData(key, data)](./server.persistencemanager.setglobaldata.md)		Set global data in the data persistence service. This data is available and shared by all lobbies of your game.