Redis ZREVRANGEBYLEX Replacement

Posted on January 24, 2023January 24, 2023 by Ian

Starting with Redis 6.2.0, the ZRANGE command added the REV, BYSCORE, BYLEX and LIMIT options. The addition of the first three options means that the ZRANGE command can now do what the ZREVRANGE, ZRANGEBYSCORE, ZREVRANGEBYSCORE, ZRANGEBYLEX and ZREVRANGEBYLEX commands can do.

As a result, those commands are now deprecated (as of Redis 6.2.0).

Therefore, we should no longer use the ZREVRANGEBYLEX command. Instead, we should use the ZRANGE command with the BYLEX and REV arguments.

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Redis ZSCORE Command Explained

Posted on January 23, 2023January 23, 2023 by Ian

In Redis, the ZSCORE command returns the score of the specified member of a sorted set.

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Redis ZRANGEBYLEX Replacement

Posted on January 21, 2023January 21, 2023 by Ian

As a result, those commands are now deprecated (as of Redis 6.2.0).

Therefore, we should no longer use the ZRANGEBYLEX command. Instead, we should use the ZRANGE command with the BYLEX argument.

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Redis HSTRLEN Command

Posted on January 20, 2023January 20, 2023 by Ian

The Redis HSTRLEN command allows us to get the length of a value that’s stored in a hash. It returns the string length of the value associated with the specified field at the hash stored in the specified key.

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Fix: “ERR wrong number of arguments for ‘smismember’ command” in Redis

Posted on January 19, 2023 by Ian

If you’re getting an error that reads “ERR wrong number of arguments for ‘smismember’ command” in Redis, it’s because you’re calling the SMISMEMBER command with the wrong number of arguments.

To fix this issue, make sure you’re passing the correct number of arguments. This command accepts two or more arguments, which represents a key and one or more members to check against that key.

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