If you’re getting an error that reads “ERR wrong number of arguments for ‘smove’ command” in Redis, it’s because you’re calling the SMOVE command with the wrong number of arguments.
To fix this issue, make sure you’re passing the correct number of arguments. At the time of writing, the correct number of arguments for this command is three.
Continue readingIf you’re getting an error that reads “ERR syntax error” when calling the SRANDMEMBER command in Redis, it could be that you’re passing too many arguments.
To fix this issue, be sure to pass the correct number of arguments. At the time of writing, SRANDMEMBER accepts up to two arguments. Any more than this results in an error.
If you get an error that reads “WRONGTYPE Operation against a key holding the wrong kind of value” when using the SMEMBERS command in Redis, it’s probably because you’re passing a key with the wrong data type to the command.
The SMEMBERS command is a “set” command, and so it is intended to be used on keys that contain a set. If the key holds a different data type, you’ll likely get the above error.
If you’re getting an error that reads “ERR numkeys should be greater than 0” in Redis, it’s probably because you’re specifying a wrong value for the first argument when calling the SINTERCARD command.
To fix this issue, make sure you’re passing a valid non-zero value that matches the number of keys you’re comparing.
Continue readingIf you’re getting an error that reads “One or more scores can’t be converted into double” when using either the SORT or SORT_RO commands in Redis, it could be because you omitted the ALPHA modifier when trying to sort string values.
If you want to sort string values lexicographically, you need to use the ALPHA modifier when using the SORT or SORT_RO command.
If you’re getting an error that reads “ERR wrong number of arguments for ‘smembers’ command” in Redis, it’s because you’re calling the SMEMBERS command with the wrong number of arguments.
To fix this issue, make sure you’re passing the correct number of arguments. At the time of writing, the correct number of arguments for this command is one.
Continue readingIf you’re getting an error that reads “WRONGTYPE Operation against a key holding the wrong kind of value” when calling either the SUNION command or the SUNIONSTORE command in Redis, it’s probably because you’re passing a key with the wrong data type.
To fix this issue, make sure that each key that you pass holds a set.
Continue readingIf you’re getting an error that reads “ERR syntax error” in Redis, it could be because you’re calling the SPOP command with too many arguments.
At the time of writing, I find that I only get this argument when I pass too many arguments. If I pass no arguments, I get a different error.
Continue readingIf you’re getting an error that reads “ERR wrong number of arguments for ‘spop’ command” in Redis, it’s because you’re calling the SPOP command with the wrong number of arguments.
At the time of writing, I find that I only get this argument when I pass no arguments. If I pass too many, I get a different error.
In any case, to fix this issue, be sure to pass at least one argument to the command (and at the time of writing, no more than two).
Continue readingIf you’re getting an error that reads “ERR value is out of range, must be positive” in Redis, it’s probably because you’re passing a negative count value to the SPOP command.
To fix this issue, make sure the second argument (if supplied) is a positive value.
Continue reading