Store Gateway: multi level chunks cache #6240
Description
Is your feature request related to a problem? Please describe.
Similar to the existing multi level cache for index, we want to support multi level cache for chunks.
Describe the solution you'd like
Depends on #6239.
It can be similar to https://github.com/cortexproject/cortex/blob/master/pkg/storage/tsdb/multilevel_cache.go but for caching bucket cache interface.