> ## Documentation Index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# PTTL

> Get TTL in milliseconds.

Use `PTTL` to read how much longer a key will live, in milliseconds.

The reply is `-1` when the key exists but has no expiration and `-2` when the key does not exist, so a missing key and a permanent one are easy to tell apart. It is the millisecond form of [`TTL`](/docs/redis/commands/generic/ttl), and the extra precision matters for short-lived keys such as locks, where rounding to whole seconds hides most of the remaining lifetime.

## Syntax

```redis theme={"system"}
PTTL <key>
```

## Arguments

| Argument | Required | Repeatable | Description |
| - | - | - | - |
| `<key>` | Yes | No | Redis key targeted by the command. |

## Important points

* Negative integer replies are sentinel values, not durations or timestamps; see the response description for missing or persistent data.

## 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 | Integer: remaining lifetime in milliseconds, `-1` if the key has no expiration, `-2` if the key does not exist |
| RESP3 | Integer: remaining lifetime in milliseconds, `-1` if the key has no expiration, `-2` if the key does not exist |

> [!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**
>
> ```bash theme={"system"}
> PTTL my-key
> ```

> **@upstash/redis**
>
> ```ts theme={"system"}
> import { Redis } from "@upstash/redis";
>
> const redis = Redis.fromEnv();
>
> const millis = await redis.pttl(key);
> ```

> **upstash\_redis**
>
> ```python theme={"system"}
> from upstash_redis import Redis
>
> redis = Redis.from_env()
> result = redis.pttl("my-key")
> print(result)
> ```

> **ioredis**
>
> ```ts theme={"system"}
> import Redis from "ioredis";
>
> const redis = new Redis(process.env.REDIS_URL!);
> const result = await redis.pttl("my-key");
> console.log(result);
> ```

> **node-redis**
>
> ```ts theme={"system"}
> import { createClient } from "redis";
>
> const client = await createClient({ url: process.env.REDIS_URL })
>   .on("error", console.error)
>   .connect();
> const result = await client.pTTL("my-key");
> console.log(result);
> ```

> **redis-py**
>
> ```python theme={"system"}
> import os
> import redis
>
> client = redis.from_url(os.environ["REDIS_URL"])
> result = client.pttl("my-key")
> print(result)
> ```

> **go-redis**
>
> ```go theme={"system"}
> 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.PTTL(context.Background(), "my-key").Result()
>     if err != nil {
>         panic(err)
>     }
>     fmt.Println(result)
> }
> ```

> **jedis**
>
> ```java theme={"system"}
> import java.net.URI;
>
> import redis.clients.jedis.Jedis;
>
> try (Jedis jedis = new Jedis(new URI(System.getenv("REDIS_URL")))) {
>   Object result = jedis.pttl("my-key");
>   System.out.println(result);
> }
> ```

> **redis-rs**
>
> ```rust theme={"system"}
> 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.pttl("my-key")?;
>     println!("{result:?}");
>     Ok(())
> }
> ```


## Related topics

- [PTTL](/docs/redis/sdks/ts/commands/generic/pttl.md)
- [TTL](/docs/redis/commands/generic/ttl.md)
- [Overview](/docs/redis/sdks/py/commands/overview.md)


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