ZSCORE - Upstash Documentation

Use ZSCORE to get the score of a member of a sorted set.

The reply is null when the member or the key does not exist, so it doubles as a membership test that also tells you the value. Use ZMSCORE to read several scores in one call, and ZRANK when you want the member's position rather than its score.

Syntax#

ZSCORE <key> <member>

Arguments#

Argument	Required	Repeatable	Description
`<key>`	Yes	No	Redis key targeted by the command.
`<member>`	Yes	No	Member name.

Important points#

RESP2 represents floating-point reply values as bulk strings; RESP3 may use native double replies. Client libraries commonly decode either form to a language number.

Response#

The reply reports the result of the operation. Error replies have the same shape in RESP2 and RESP3 and are surfaced as exceptions by the SDKs below.

Protocol	Reply
RESP2	Bulk string containing a number or Null bulk string or null array
RESP3	Double or Null

Note

Client libraries often decode bulk strings, maps, sets, and numeric strings into language-native values. The table describes the Redis wire reply.

Examples#

TCP examples use the TLS REDIS_URL from the Upstash console. REST examples use UPSTASH_REDIS_REST_URL and UPSTASH_REDIS_REST_TOKEN.

Redis CLI

ZSCORE my-key member

@upstash/redis

import { Redis } from "@upstash/redis";const redis = Redis.fromEnv();await redis.zadd("key",    { score: 1, member: "m1" },    { score: 2, member: "m2" },    { score: 3, member: "m3" },    { score: 4, member: "m4" },)const score = await redis.zscore("key", "m2")console.log(score) // 2

upstash_redis

from upstash_redis import Redisredis = Redis.from_env()result = redis.zscore("my-key", "member")print(result)

ioredis

import Redis from "ioredis";const redis = new Redis(process.env.REDIS_URL!);const result = await redis.zscore("my-key", "member");console.log(result);

node-redis

import { createClient } from "redis";const client = await createClient({ url: process.env.REDIS_URL })  .on("error", console.error)  .connect();const result = await client.zScore("my-key", "member");console.log(result);

redis-py

import osimport redisclient = redis.from_url(os.environ["REDIS_URL"])result = client.zscore("my-key", "member")print(result)

go-redis

package mainimport (    "context"    "fmt"    "os"    "github.com/redis/go-redis/v9")func main() {    opts, err := redis.ParseURL(os.Getenv("REDIS_URL"))    if err != nil {        panic(err)    }    client := redis.NewClient(opts)    result, err := client.ZScore(context.Background(), "my-key", "member").Result()    if err != nil {        panic(err)    }    fmt.Println(result)}

jedis

import java.net.URI;import redis.clients.jedis.Jedis;try (Jedis jedis = new Jedis(new URI(System.getenv("REDIS_URL")))) {  Object result = jedis.zscore("my-key", "member");  System.out.println(result);}

redis-rs

use redis::TypedCommands;fn main() -> redis::RedisResult<()> {    let url = std::env::var("REDIS_URL").expect("REDIS_URL is not set");    let client = redis::Client::open(url)?;    let mut connection = client.get_connection()?;    let result = connection.zscore("my-key", "member")?;    println!("{result:?}");    Ok(())}