What is new in SwiftData?

SwiftData has introduced several new features and improvements. Here are the key updates:

1. Custom Data Stores: SwiftData now supports custom data stores, allowing you to use alternative backends like SQLite, remote web services, or even collections of JSON files. This flexibility enables you to use SwiftData's API with various storage backends (Platforms State of the Union).

2. Schema Macro: A new schema macro helps avoid duplicate models, making it easier to set up and configure model containers (What’s new in SwiftData).

3. Index and Unique Macros: The index macro makes queries more efficient by indicating which properties are commonly queried together, while the unique macro ensures that a set of properties has no duplicate entries (Platforms State of the Union).

4. History API: SwiftData now provides access to the history of changes in a datastore, making it easy to inspect recent changes. This is particularly useful for tracking local changes that need to be synced to a remote web service (Platforms State of the Union).

5. Previewable Macro: The new previewable macro works well with SwiftData, making it easier to work with queries while iterating on views (Platforms State of the Union).

6. Expression Macro: A new macro to improve performance by optimizing queries with complex filters (What’s new in SwiftData).

7. Model Container Configuration: New ways to set up and configure model containers have been introduced, enhancing the flexibility and efficiency of data modeling (What’s new in SwiftData).

For a detailed overview, you can watch the session What’s new in SwiftData.