---
title: "Data Stream metrics"
slug: "datastream-metric"
updated: 2026-09-17T09:47:59Z
published: 2026-09-17T09:47:59Z
canonical: "api.ncloud-docs.com/datastream-metric"
---

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

# Data Stream metrics

Available in VPC

This guide provides information on the performance and operational metrics of the Data Stream service. Performance/operational metrics can be managed in an integrated manner through NAVER Cloud Platform's Cloud Insight service and can be used for various monitoring purposes.

              Note

              

See the [Cloud Insight API Guide](/docs/en/management-cloudinsight) for information on how to use performance/operational metrics for monitoring.

## Basic information

The following is the basic information of the Data Stream service for using performance/operational metrics.

- Product name (`prodName`)
  - System/Data Stream(VPC)
- Product key (`cw_key`)
  - 1102576204545921024
- Metric type
  - [topic](/docs/en/datastream-metric#topic): Topic data
  - [log](/docs/en/datastream-metric#log): Log data
  - [consumerGroup](/docs/en/datastream-metric#consumerGroup): Consumer group data

## Performance/operation metrics

The performance/operational metrics of the Data Stream service are as follows:

### topic

Topic-related performance/operational metrics are as follows:

- Metric

| Metric name | Data type | Unit | Metric Type | Description | Interval | aggregation |
| --- | --- | --- | --- | --- | --- | --- |
|  | bytes_in_total | float | bytes | BASIC, DEFAULT | incoming byte rate | Min1, Min5, Min30, Hour2, Day1 |
|  | messages_in_total | float | num | BASIC, DEFAULT | incoming messages rate | Min1, Min5, Min30, Hour2, Day1 |
|  | bytes_out_total | float | bytes | BASIC, DEFAULT | outgoing byte rate | Min1, Min5, Min30, Hour2, Day1 |
- Dimension

| Dimension name | Data type | idDimension |
| --- | --- | --- |
|  | mbrNo | String |
|  | type | String |
|  | topicId | String |
|  | topicName | String |

### log

Log-related performance/operational metrics are as follows:

- Metric

| Metric name | Data type | Unit | Metric Type | Description | Interval | aggregation |
| --- | --- | --- | --- | --- | --- | --- |
|  | log_size | float | bytes | BASIC, DEFAULT | topic log size | Min1, Min5, Min30, Hour2, Day1 |
- Dimension

| Dimension name | Data type | idDimension |
| --- | --- | --- |
|  | mbrNo | String |
|  | type | String |
|  | topicId | String |
|  | topicName | String |
|  | partition | Integer |

### consumerGroup

consumerGroup-related performance/operational metrics are as follows:

- Metric

| Metric name | Data type | Unit | Metric Type | Description | Interval | aggregation |
| --- | --- | --- | --- | --- | --- | --- |
|  | consumer_group_lag | Long | num | BASIC, DEFAULT | consumer group lag | Min1, Min5, Min30, Hour2, Day1 |
|  | consumer_group_current_offset | Long | num | BASIC, DEFAULT | consumer group current offset | Min1, Min5, Min30, Hour2, Day1 |
- Dimension

| Dimension name | Data type | idDimension |
| --- | --- | --- |
|  | mbrNo | String |
|  | type | String |
|  | topicId | String |
|  | topicName | String |
|  | consumerGroupId | String |
|  | partition | Integer |