MONITOR

Important points

This is a connection-oriented command and is available over native Redis TCP, not the stateless REST endpoint.

This command can expose administrative information or make a broad destructive change. Restrict it to trusted code paths.

MONITOR changes the TCP connection into a continuous command stream. Use a dedicated connection and close it to stop monitoring.

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`, then a stream of bulk strings, one per command the server executes
RESP3	Simple string `OK`, then a stream of bulk strings, one per command the server executes

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

MONITOR

ioredis

import Redis from "ioredis";

const redis = new Redis(process.env.REDIS_URL!);
redis.monitor((error, monitor) => {
  if (error) throw error;
  monitor.on("monitor", (time, args, source, database) => {
    console.log({ time, args, source, database });
  });
});

node-redis

import { createClient } from "redis";

const client = await createClient({ url: process.env.REDIS_URL })
  .on("error", console.error)
  .connect();

await client.monitor((command) => {
  console.log(command);
});

redis-py

import os
import redis

client = redis.from_url(os.environ["REDIS_URL"])
with client.monitor() as monitor:
    for command in monitor.listen():
        print(command)

jedis

import java.net.URI;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisMonitor;

try (Jedis jedis = new Jedis(new URI(System.getenv("REDIS_URL")))) {
  jedis.monitor(new JedisMonitor() {
    @Override
    public void onCommand(String command) {
      System.out.println(command);
    }
  });
}

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 packed = redis::cmd("MONITOR").get_packed_command();
    connection.send_packed_command(&packed)?;
    loop {
        println!("{:?}", connection.recv_response()?);
    }
}

Redis

Command Reference

Syntax

Arguments

Important points

Response

Examples

​Syntax

​Arguments

​Important points

​Response

​Examples

Syntax

Arguments

Important points

Response

Examples