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

# Streaming alerts

<Note>
  **PRIVATE BETA**

  This feature is currently in Private Beta, contact [sales@metronome.com](mailto:sales@metronome.com) for early access.

  Don't have a Metronome account? [Sign up to get started.](https://signup.metronome.com)
</Note>

Streaming alerts reduce the time between a usage event arriving and a [threshold notification](/guides/customers-billing/set-up-notifications/threshold-notifications) firing. With streaming alerts, eligible alert evaluations run on a faster lane with evaluation windows as low as one minute, and you can tune evaluation speed per customer.

## What's changing

By default, alert evaluation runs on a standard cadence. Streaming alerts add:

* A **one-minute evaluation lane** for eligible alert types and customers.
* **Per-customer routing** so you can put only selected customers or cohorts on the faster lane, while the rest stay on the standard cadence.
* A path to **sub-minute windows** where it is safe and valuable.

## Use cases

* **Entitlement enforcement:** Gate product access within a minute of a customer exhausting their balance.
* **Spend limit controls:** Detect and respond to runaway spend on high-velocity workloads before overage accumulates.
* **Anomaly detection:** Surface unexpected usage spikes faster so operations teams can investigate.