How do I get the size of a set on Redis?
For lists I can do the operation:
LLEN KeyName
and it will return the size of a list in Redis. What is the equivalent command for sets? I can't seem to find this in any documentation.
You are looking for the SCARD command:
SCARD keyReturns the set cardinality (number of elements) of the set stored at
Return value
Integer reply: the cardinality (number of elements) of the set, or 0 if key does not exist.
You can view all of the set commands on the documentation webpage.
If it's a sorted set, you can use
ZCOUNT myset -inf +inf
or
ZCARD myset