Implement a caching mechanism to cache some values as key-value during a mapping to use them later in other mappings

[tnamli]

e.g. In MIMIC-IV, in diagnosis table there is no date information to use as diagnosis date but we know which encounter it is done. So during 'admissions' to Encounter mapping if we can store the admission times per admission in cache we can use this during the diagnosis mapping to use it as the date of diagnosis.

Cache mechanism will be implemented base on Redis