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# Schedule and run Snowflake source meters

> A Snowflake source runs only when a meter run is started.

A Snowflake source runs only when a meter run is started.

## How runs are triggered

A Snowflake source does not automatically start when new data appears in Snowflake. Processing begins only when a meter run is initiated.

Supported run methods include:

* Manual run from the Mediation UI.
* Meter Run API.
* Workflow using the Run Meter action.

## Scheduling considerations

A Snowflake source does not include a built-in scheduler in the meter itself. For recurring execution, use Workflow to schedule the Run Meter action.

Typical schedules include:

* Every 30 minutes for near-real-time batch ingestion.
* Hourly for usage processing.
* Daily for billing preparation.
* Monthly for reconciliation and reporting.

Example schedule flow:

```
Workflow Schedule
Run Meter
Snowflake Export
Pipeline Processing
```

## What happens during a run

Each run executes the configured query once, processes the resulting dataset, and completes.

New data added after the run starts is not picked up automatically by that run.