> ## 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.

# Advanced

## Request Timeout

You can configure the SDK so that it will throw an error if the request takes longer than a specified time.

You can achieve this using the signal parameter like this:

```ts theme={"system"}

const index = new Index({
  url: "<UPSTASH_VECTOR_REST_URL>",
  token: "<UPSTASH_VECTOR_REST_TOKEN>",
  // set a timeout of 1 second
  signal: () => AbortSignal.timeout(1000),
});

try {
  await index.query({ ... })
} catch (error) {
  if (error.name === "TimeoutError") {
    console.error("Request timed out");
  } else {
    console.error("An error occurred:", error);
  }
}
```

## Telemetry

This sdk sends anonymous telemetry data to help us improve your experience.
We collect the following:

* SDK version
* Platform (Cloudflare, AWS or Vercel)
* Runtime version ([node@18.x](mailto:node@18.x))

You can opt out by setting the `UPSTASH_DISABLE_TELEMETRY` environment variable
to any truthy value.

```sh theme={"system"}
UPSTASH_DISABLE_TELEMETRY=1
```