Thanks a lot, I’ll look into this as soon as possible!

I attached the test - redisson-hibernate-6.zip. To run it start h2 database and Redis database and then test.cmd. The problem is that key object passed to org.hibernate.cache.spi.support.StorageAccess#getFromCache method can’t be serialized completely and this causes the exception.

Could you please make org.hibernate.query.internal.QueryParameterBindingsImpl.ParameterBindingsMementoImpl serializable? or even better org.hibernate.cache.spi.QueryKey.ParameterBindingsMemento interface.

Would you mind creating a small reproducer for this? Preferably in https://github.com/hibernate/hibernate-orm/blob/main/hibernate-core/src/test/java/org/hibernate/orm/test/serialization/CacheKeySerializationTest.java or https://github.com/hibernate/hibernate-orm/blob/main/hibernate-jcache/src/test/java/org/hibernate/orm/test/jcache/InsertedDataTest.java