DATAStack

Clear separation between main and background contexts reduces common Core Data threading errors, as demonstrated by the easy access to mainContext and performInNewBackgroundContext methods.

Runs synchronously in testing environments when using in-memory stores, eliminating the need for XCTestExpectations and simplifying test code, as highlighted in the Testing section.

Avoids singletons to encourage better patterns, making the stack instance-based and easier to integrate without global state, as stated in the philosophy.

Out-of-the-box support for SQLite and in-memory stores with customizable names and container URLs, shown in the multiple initialization options for different use cases.