# Source: https://getlago.com/docs/guide/events/metering-source.md

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

# Metering ingestion sources

> Here is a list of sources you can use to ingest usage data. Some of these sources are capable of handling up to 15,000 events per second with default settings.

## Free sources

Here is the list of usage ingestion and metering sources available in the free version of Lago.

<CardGroup cols={2}>
  <Card title="HTTP Client">
    Establishes a connection to a server and continuously sends requests for a specific message.
  </Card>
</CardGroup>

## Premium sources

Here is the list of usage ingestion and metering sources available in the premium version of Lago.

<Info>
  **PREMIUM ADD-ON** ✨

  Premium ingestion sources are available upon request only. Please **[contact us](mailto:hello@getlago.com)** to get access to this premium feature.
</Info>

<CardGroup cols={2}>
  <Card title="AWS Kinesis">
    Receives messages from multiple Kinesis streams.
  </Card>

  <Card title="AWS S3">
    Fetches objects from an S3 bucket, with optional prefix filtering, either by listing items or through real-time upload notifications.
  </Card>

  <Card title="AWS SQS">
    Retrieves and processes messages from an AWS SQS queue using a specified URL.
  </Card>

  <Card title="Azure">
    Transmits usage and metering data via Azure CosmosDB, Queue Storage, or Table Storage.
  </Card>

  <Card title="CockroackDB">
    Monitors a CockroachDB Core Changefeed and creates a message for each received row.
  </Card>

  <Card title="CSV Files">
    Reads data from one or more CSV files
  </Card>

  <Card title="Google Cloud Platform">
    Transmits usage and metering data via GCP Big Query or Cloud Storage bucket.
  </Card>

  <Card title="Kafka">
    Establishes a connection to Kafka brokers and consumes messages from one or more topics.
  </Card>

  <Card title="MongoDB">
    Runs a query in MongoDB and produces a message for every document returned.
  </Card>

  <Card title="Redis">
    Transmits usage and metering data via Redis Scan or Streams.
  </Card>

  <Card title="SQL">
    Transmits usage and metering data via SQL raw or select.
  </Card>

  <Card title="Websocket">
    Establishes a connection to a websocket server and continuously send usage for incoming messages.
  </Card>
</CardGroup>