Vadim D.

Elasticache instance is in clustered mode. (Cluster mode on). There are 3 nodes and 1 shard. The constant value is `IdM`. We have switched the ElastiCache to non-clustered mode to...

I was actually thinking that putting the KeyPrefix with `{ }` might resolve the issue because then all the keys will be hashed based on KeyPrefix only and will fall...

This is how the Redis store looks like when I run it locally:  As you can see, all `sub` are GUIDs, but they are formated as a GUID without...

I have tried to wrap the PrefixKey with `{}`, so it will be `{IdM}` and it's actually working with clustered ElastiCache

Understood, thank you for your efforts. In the meanwhile, since I have only 1 shard in my ElastiCache cluster anyway, this resolution will work fine in this use case.