What's new in SwiftData?

Asked on 01/31/2025

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In the "What's new in SwiftData" session at WWDC 2024, several new features and improvements were introduced for SwiftData. Here are the highlights:

  1. Schema Macro: A new schema macro helps avoid duplicate models, making it easier to manage your data models efficiently.

  2. Model Containers: There are new ways to set up and configure model containers, which are essential for managing your app's data models.

  3. Query Optimization: You can now optimize queries with complex filters and use a new macro to improve performance.

  4. Index Macro: The index macro allows you to make queries more performant by specifying which properties are commonly queried together.

  5. Unique Constraints: You can add unique constraints to your schema to prevent duplicate entries and enhance query performance.

  6. History API: A new history API is available to track changes to your app's models, which is useful for features like syncing with a server or responding to changes from an app extension.

  7. Custom Data Stores: SwiftData now supports custom data stores, allowing you to use different persistence backends, such as SQLite or a remote web service.

For more detailed information, you can refer to the session What’s new in SwiftData (00:07).

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