ZSCORE for member score in Redis

Introduction

ZSCORE helps you find the score of a specific member in a sorted set. It tells you the exact value assigned to that member.

You want to check a player's points in a game leaderboard.

You need to find the rating of a product in a sorted list.

You want to see the priority score of a task in a queue.

You want to verify the score of a user in a ranking system.

Syntax

Redis

ZSCORE key member

The key is the name of the sorted set.

The member is the item whose score you want to find.

Examples

Get the score of 'player1' from the 'leaderboard' sorted set.

Redis

ZSCORE leaderboard player1

Find the score of 'task42' in the 'tasks' sorted set.

Redis

ZSCORE tasks task42

Sample Program

Add two players with scores to 'leaderboard' and get the score of 'player1'.

Redis

ZADD leaderboard 100 player1
ZADD leaderboard 200 player2
ZSCORE leaderboard player1

Important Notes

If the member does not exist, ZSCORE returns nil (no value).

Scores are stored as floating point numbers, but often used as integers.

ZSCORE only works with sorted sets, not regular sets or lists.

Summary

ZSCORE gets the score of a member in a sorted set.

Use it to check rankings or priorities easily.

It returns nil if the member is not found.