redis Redis Set Datatype Size of a Set
Example
The size of a set can be determined using the SCARD command. SCARD will return the cardinality of a set or the number of members in the set. For example, if I had a Redis set my_set stored in the database that looked like (Apple, Orange, Banana), I could get the size using the following code:
SCARD my_set
In the case of my example set, this would return 3. If the user executes an SCARD command on a key that does not exist, Redis will return 0.
