> ## 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.

# WAITAOF

> Wait for local and replica persistence.

Use `WAITAOF` to block until preceding writes have been persisted to the append-only file locally and on replicas.

`<numlocal>` is how many local acknowledgements to wait for and `<numreplicas>` how many replicas must have persisted the writes. The two-element reply gives the local count first and the replica count second, and either can come back lower than requested when the timeout expires, so both need checking. A timeout of `0` waits indefinitely.

Where [`WAIT`](/docs/redis/commands/generic/wait) confirms only that replicas received a write, `WAITAOF` confirms that it reached persistent storage, which is the stronger guarantee to ask for before acknowledging work that must survive a restart. On Upstash it waits for the writes enqueued before it began, including writes made by other connections.

## Syntax

```redis theme={"system"}
WAITAOF <numlocal> <numreplicas> <timeout>
```

## Arguments

| Argument      | Required | Repeatable | Description                                                                          |
| ------------- | -------- | ---------- | ------------------------------------------------------------------------------------ |
| `numlocal`    | Yes      | No         | Whether to wait for local persistence: `0` or `1`.                                   |
| `numreplicas` | Yes      | No         | Non-negative number of replicas whose append-only files should include prior writes. |
| `timeout`     | Yes      | No         | Maximum wait in milliseconds; `0` means no timeout.                                  |

## Important points

* This deployment waits for writes enqueued before `WAITAOF` begins, including writes from other connections.
* The two-element reply contains the local persistence acknowledgement first and the replica persistence count second.

## 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    | Two-element array of integers: local and replica acknowledgments |
| RESP3    | Two-element array of integers: local and replica acknowledgments |

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

## Examples

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

<AccordionGroup>
  <Accordion title="Redis CLI" icon="terminal">
    ```bash theme={"system"}
    WAITAOF 1 1 1000
    ```
  </Accordion>

  <Accordion title="@upstash/redis" icon="node-js" iconType="brands">
    <Note>
      This command is not supported yet in `@upstash/redis`.
    </Note>
  </Accordion>

  <Accordion title="upstash_redis" icon="python" iconType="brands">
    <Note>
      This command is not supported yet in `upstash_redis`.
    </Note>
  </Accordion>

  <Accordion title="ioredis" icon="node-js" iconType="brands">
    ```ts theme={"system"}
    import Redis from "ioredis";

    const redis = new Redis(process.env.REDIS_URL!);
    const result = await redis.call("WAITAOF", "1", "1", "1000");
    console.log(result);
    ```
  </Accordion>

  <Accordion title="node-redis" icon="node-js" iconType="brands">
    ```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.sendCommand(["WAITAOF", "1", "1", "1000"]);
    console.log(result);
    ```
  </Accordion>

  <Accordion title="redis-py" icon="python" iconType="brands">
    ```python theme={"system"}
    import os
    import redis

    client = redis.from_url(os.environ["REDIS_URL"])
    result = client.waitaof("1", "1", "1000")
    print(result)
    ```
  </Accordion>

  <Accordion title="go-redis" icon="golang" iconType="brands">
    ```go theme={"system"}
    package main

    import (
        "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.WaitAOF(context.Background(), 1, 1, time.Second).Result()
        if err != nil {
            panic(err)
        }
        fmt.Println(result)
    }
    ```
  </Accordion>

  <Accordion title="jedis" icon="java" iconType="brands">
    ```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.waitAOF(1, 1, 1000);
      System.out.println(result);
    }
    ```
  </Accordion>

  <Accordion title="redis-rs" icon="rust" iconType="brands">
    ```rust theme={"system"}
    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("WAITAOF");
        command.arg("1");
        command.arg("1");
        command.arg("1000");
        let result: redis::Value = command.query(&mut connection)?;
        println!("{result:?}");
        Ok(())
    }
    ```
  </Accordion>
</AccordionGroup>


## Related topics

- [Changelog](/docs/redis/overall/changelog.md)