CONFIG SET - Upstash Documentation

Use CONFIG SET to change runtime configuration parameters without restarting. This deployment permits changes only to notify-keyspace-events, which selects the keyspace and keyevent notifications the server publishes: the value is a set of flag characters, such as KEA for everything, or Kg$ for generic and string keyspace events. Any other parameter returns an error. Several parameter and value pairs can be given in one call, and they are processed from left to right, so if a later pair is rejected an earlier change may already have taken effect.

Syntax

CONFIG SET <parameter> <value> [parameter value ...]

Arguments

Argument	Required	Repeatable	Description
`parameter`	Yes	Yes, in pairs	Runtime configuration parameter to update.
`value`	Yes	Yes, in pairs	New value for the preceding parameter.

Important points

This command can expose administrative information or make a broad destructive change. Restrict it to trusted code paths.
This deployment permits changes only to notify-keyspace-events; any other parameter returns an error.
Parameter/value pairs are processed from left to right. If a later pair is invalid, an earlier valid change may already have taken effect.

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`

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

CONFIG SET notify-keyspace-events Ex

@upstash/redis

This command is not supported yet in @upstash/redis.

upstash_redis

This command is not supported yet in upstash_redis.

ioredis

import Redis from "ioredis";

const redis = new Redis(process.env.REDIS_URL!);
const result = await redis.config("SET", "notify-keyspace-events", "Ex");
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.configSet("notify-keyspace-events", "Ex");
console.log(result);

redis-py

import os
import redis

client = redis.from_url(os.environ["REDIS_URL"])
result = client.config_set("notify-keyspace-events", "Ex")
print(result)

go-redis

package main

import (
    "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.ConfigSet(context.Background(), "notify-keyspace-events", "Ex").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.configSet("notify-keyspace-events", "Ex");
  System.out.println(result);
}

redis-rs

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 mut command = redis::cmd("CONFIG");
    command.arg("SET");
    command.arg("notify-keyspace-events");
    command.arg("Ex");
    let result: redis::Value = command.query(&mut connection)?;
    println!("{result:?}");
    Ok(())
}

​Syntax

​Arguments

​Important points

​Response

​Examples

Syntax

Arguments

Important points

Response

Examples