cacheParameterGroupFamily
Specifies the name of the cache parameter group family to which the engine default parameters apply.
Valid values are: memcached1.4
| memcached1.5
| memcached1.6
| redis2.6
| redis2.8
| redis3.2
| redis4.0
| redis5.0
| redis6.0
| redis6.x
| redis7