In Redis, the ZSCORE command returns the score of the specified member of a sorted set.
Tag: commands
Redis ZRANGEBYLEX Replacement
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 ZRANGEBYLEX command. Instead, we should use the ZRANGE command with the BYLEX argument.
Redis HSTRLEN Command
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.
Redis ZUNIONSTORE Command Explained
In Redis, the ZUNIONSTORE command works in the same way that ZUNION works, except that it stores the result in a key that we specify.
In other words, it computes the union of the specified sorted sets, then stores the result in the specified key.
Continue readingRedis ZUNION Command Explained
In Redis, the ZUNION command returns the union of the specified sorted sets.
Redis ZREVRANGEBYSCORE Replacement
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 ZREVRANGEBYSCORE command. Instead, we should use the ZRANGE command with the REV and BYSCORE argument.
Redis ZREMRANGEBYRANK Command Explained
In Redis, the ZREMRANGEBYRANK command enables us to remove all members from a sorted set with a rank between a certain range.
Redis ZREMRANGEBYSCORE Command Explained
In Redis, the ZREMRANGEBYSCORE command enables us to remove all members from a sorted set with a score between a certain range.
Redis ZREMRANGEBYLEX Command Explained
In Redis, the ZREMRANGEBYLEX command enables us to use a lexicographical range to remove members from a sorted set. That is, we can specify that all members between a given lexicographical range are removed.
This relies on all members having the same score (which forces lexicographical ordering).
Continue readingRedis ZREM Command Explained
In Redis, the ZREM command removes one or more members from the specified sorted set.