Our redis cache starts returning empty objects (object created with no arg constructor) instead Optional.empty()

Steps to reproduce myImplRedisCacheRepository.findById("anyRandomString");

Alternatively it also is broken when returning a list, it contains single element with "empty object" myImplRedisCacheRepository.findAllById(List.of("anyRandomString"))

Thats affects 2.3.2.RELEASE, we discovered it after updating gradle plugin from id("org.springframework.boot") version "2.3.1.RELEASE" to id("org.springframework.boot") version "2.3.2.RELEASE"

Repository:

@Repository
public interface MyImplRedisCacheRepository extends CrudRepository<MyImpl, String> {
}

Redis config:

spring:
  redis:
    host: "localhost"
    port: 6379
    password:

@Configuration
@EnableRedisRepositories(keyspaceConfiguration = CacheConfig.CustomKeyspaceConfiguration.class)
public class CacheConfig {

    static class CustomKeyspaceConfiguration extends KeyspaceConfiguration {

        @Value("${service.cache.time-to-live}")
        private Duration timeToLive;

        @Override
        public boolean hasSettingsFor(Class<?> type) {
            return true;
        }

        @Override
        public KeyspaceSettings getKeyspaceSettings(Class<?> type) {
            KeyspaceSettings keyspaceSettings =
                    new KeyspaceSettings(type, "my-project-keyspace");
            keyspaceSettings.setTimeToLive(timeToLive.toSeconds());
            return keyspaceSettings;
        }
    }
}

Redis cluster started as docker image docker run -d -p 6379:6379 --name redis redis

Comment From: wilkinsona

Thanks for the report, but Spring Data Redis is managed as a separate project and they use JIRA for issue tracking. Could you please open an issue over there and comment here with a link to it so that we can follow along?

Comment From: thankusWR

Ok, thank you for link. https://jira.spring.io/browse/DATAREDIS-1192 I was able to localize code change potentially responsible for that (link and details in above ticket).

Comment From: codebuks

i meet the same problem，i have to fall back to 2.3.1;