Eliminate callbacks and locks for cache dictionaries by storing all keys in a single map during queries, without separating "not found" and "expired" keys.
Why it matters
This feature simplifies and optimizes cache dictionary access by removing the overhead caused by callbacks and locking mechanisms. By consolidating key storage, it improves performance and reduces complexity when querying cache dictionaries in ClickHouse.How to use it
This improvement is applied internally in the cache dictionary implementation; users benefit automatically without needing to change configurations or query syntax.