In Redis, the SUNIONSTORE command does the same thing that SUNION does, except that it stores the result in a key. More specifically, it takes the members of the set resulting from the union of all of the given sets, and stores them in the specified key.
Category: Redis
Redis SUNION Command Explained
In Redis, the SUNION command returns the members of the set resulting from the union of all of the given sets.
Redis SREM Command Explained
In Redis, the SREM command allows us to remove one or more members from a set.
Fix “ERR syntax error” when using the SISINTERCARD Command in Redis
If you’re getting an error that reads “ERR syntax error” when using the SINTERCARD command, it could be because your first argument is too low.
If this is the case, you can easily fix the issue by making sure that the first argument reflects the actual number of sets that you’re comparing.
Continue readingRedis SRANDMEMBER Command Explained
In Redis, the SRANDMEMBER command returns one or more random members from the set value store at the specified key.
If you want to remove the random member/s from the set, use the SPOP command.
Redis SPOP Command Explained
In Redis, the SPOP command removes and returns one or more random members from the set value store at the specified key.
This command is similar to the SRANDMEMBER command in that it returns one or more random members from a set, but SPOP removes it, whereas SRANDMEMBER doesn’t.
Redis SMOVE Command Explained
In Redis, the SMOVE command moves a member of a set from one key to another. In other words, the member is removed from the source set and added to the destination set.
Fix: “ERR Number of keys can’t be greater than number of args” when using the SINTERCARD Command in Redis
If you’re getting an error that reads “ERR Number of keys can’t be greater than number of args” when using the SINTERCARD command, it’s probably because your first argument is the wrong value.
To fix this issue, make sure the first argument reflects the number of sets that you’re comparing.
Continue readingRedis SMEMBERS Command Explained
In Redis, the SMEMBERS command returns all members of a given set. We specify the key name of the set when we call the command.
Redis SMISMEMBER Command Explained
In Redis, we can use the SMISMEMBER command to find out whether one or more members are in a given set. It’s similar to the SISMEMBER command, except that it allows us to check more than one member at a time.
The SMISMEMBER command was introduced in Redis 6.2.0.