This is a maintenance release coming with bug fixes and performance improvements.

#944 Avoid slow Class.forName when serializing lambdas #946 Make the ImmutableCollections serializers public and final #948 Ensure that record constructors are always accessible #951 Fix serialization of Kotlin lambdas #955 Fix type resolution for generic arrays #956 Performance improvements for Kryo.isClosure()

Other Tasks:

• Test CI build against Java 20
• Support for Kotlin tests
• Upgrade Maven plugin dependencies

The full list of changes can be found here.

Many thanks to all contributors!

Upgrade Notes

For migration from previous major versions please check out the migration guide. We're asking the community to help and contribute this part: please edit the migration wiki page as you encounter any information or issues that might help others.

Compatibility

• Serialization compatible
  • Standard IO: Yes
  • Unsafe-based IO: Yes
• Binary compatible - Yes (Details)
• Source compatible - Yes (Details)