Cache Region prefix with Z:, What is this?

[kiranmaikasturi]

I am using Redis as Hibernate 2L cache, using hibernate.cache.region_prefix=hibernate. I can see 2 keys like this "hibernate.abc" "Z:hibernate.abc" Are these really 2 keys with same value, or different? How can i set custom prefix?

[debop]

@kiranmaikasturi
Z means zset structure in redis for expiration timestamp store. you can't custom prefix.