레디스 랭킹 (zrank, sorted set) 최대값 최소값
Key(Member) : String 이므로 제한 딱히 없음.
Value(Score) : Double, -9007199254740992 ~ 9007199254740992 ( -2^52 ~ 2^53 )
갯수 : 2^32 -1
실제로 저 영역이 벗어나면 값이 이상해지더라... (Test5, Test11과 Test 9, Test10은 서로 다른 값으로 설정함)
문서 출처 :
Data types – Redis
*Data types *Strings Strings are the most basic kind of Redis value. Redis Strings are binary safe, this means that a Redis string can contain any kind of data, for instance a JPEG image or a serialized Ruby object. A String value can be at max 512 Megabyt
redis.io
ZADD – Redis
Adds all the specified members with the specified scores to the sorted set stored at key. It is possible to specify multiple score / member pairs. If a specified member is already a member of the sorted set, the score is updated and the element reinserted
redis.io