SETEX - Upstash Documentation

Warning

Prefer SET with the EX argument in new code: SET <key> <value> EX <seconds>.

Use SETEX to set a value together with a lifetime in seconds.

The value and the expiration are applied atomically, so the key never exists without an expiration; writing the value and expiring it in two commands leaves a window in which a failure makes the key permanent. A lifetime of zero or less returns an error.

Use PSETEX for millisecond precision. SET with EX or PX does the same thing and additionally supports conditions and reading the previous value.

Syntax#

SETEX <key> <seconds> <value>

Arguments#

Argument	Required	Repeatable	Description
`<key>`	Yes	No	Redis key targeted by the command.
`<seconds>`	Yes	No	Lifetime in seconds.
`<value>`	Yes	No	String value to store.

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	Simple string `OK`
RESP3	Simple string `OK`

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

SETEX my-key 1000 value

@upstash/redis

import { Redis } from "@upstash/redis";const redis = Redis.fromEnv();const result = await redis.setex("my-key", 1000, "value");console.log(result);

upstash_redis

from upstash_redis import Redisredis = Redis.from_env()result = redis.setex("my-key", 1000, "value")print(result)

ioredis

import Redis from "ioredis";const redis = new Redis(process.env.REDIS_URL!);const result = await redis.setex("my-key", "1000", "value");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.setEx("my-key", 1000, "value");console.log(result);

redis-py

import osimport redisclient = redis.from_url(os.environ["REDIS_URL"])result = client.setex("my-key", 1000, "value")print(result)

go-redis

package mainimport (    "context"    "fmt"    "os"    "time"    "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.SetEx(context.Background(), "my-key", "value", 1000*time.Second).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.setex("my-key", 1000, "value");  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.set_ex("my-key", "value", 1000)?;    println!("{result:?}");    Ok(())}