Flutter developers, listen up! A recent case study has highlighted the importance of using keys in widgets to improve performance. According to a developer who created an app similar to Instagram for pets, they encountered a performance bottleneck that was only resolved by adding keys to their StyledText widget. The refactor involved separating function-based widgets into separate classes and assigning them unique keys. This simple fix led to noticeable improvements in scrolling performance, reducing jank and concurrent builds. The developer's repository containing the refactor is now publicly available.

Source: https://dev.to/dirisujesse/unlocking-improved-flutter-performance-a-case-for-keys-101j