All Products
Search
Document Center

Tablestore:Overview

Last Updated:Oct 23, 2024

You can view monitoring information about Tablestore resources to monitor the resource usage. You can also configure alert rules for important metrics of the resources. This way, you can receive notifications of metric anomalies and troubleshoot the errors at the earliest opportunity. This topic describes the metrics of Tablestore and the alert rules that you can configure for the metrics.

Background information

CloudMonitor is a service that monitors Internet applications and Alibaba Cloud resources. You can use CloudMonitor to monitor the metrics of Alibaba Cloud resources and configure alert rules for specific metrics. This way, you can monitor the usage of your Alibaba Cloud resources and the status of your applications. You can also handle alerts at the earliest opportunity to ensure the availability of your applications. For more information, see What is CloudMonitor?

Metrics

You can monitor Tablestore instances by using the CloudMonitor console and monitor Tablestore instances and tables by using CloudMonitor SDKs. You can also monitor Tablestore instances, tables, and search indexes by using the Tablestore console.

Tablestore metrics monitored by using the CloudMonitor console

Resource type

Metric

Description

Instances

InstanceCU

The average number of capacity units (CUs) that are consumed per minute in on-demand mode.

Note

CUs are the unit of measurement that is used for read throughput and write throughput in on-demand mode. For more information, see Read and write throughput.

The metrics include internal read CUs, internal write CUs, instance metered read CUs, instance metered write CUs, read CUs for operations, and write CUs for operations.

RequestCount

The average number of requests per minute.

The metrics include the total number of requests and the numbers of requests that return status codes 2xx, 429, 4xx, and 5xx.

InstanceNet

The average amount of traffic that is used per minute.

The metrics include inbound traffic over the Internet, outbound traffic over the Internet, free outbound traffic over the Internet, inbound traffic over the internal network, and outbound traffic over the internal network.

RowCount

The average number of rows on which operations are performed per minute.

The metrics include the total number of rows and the number of failed rows.

Tablestore metrics monitored by using CloudMonitor SDKs

Resource type

Metric

Description

Instances

InstanceCount2xxNumber

The number of requests that return status codes 2xx per second.

InstanceCount429Number

The number of requests that return status code 429 per second.

InstanceCount4xxNumber

The number of requests that return status codes 4xx per second.

InstanceCount5xxNumber

The number of requests that return status codes 5xx per second.

InstanceExtranetIn

The amount of inbound traffic over the Internet per second. Unit: bytes.

InstanceExtranetOut

The amount of outbound traffic over the Internet per second. Unit: bytes.

InstanceFailRowCount

The number of rows on which the operations failed per second.

InstanceFreeExtranetOut

The amount of free outbound traffic over the Internet per second. Unit: bytes.

InstanceFreeReadCU

The number of internal read CUs per second.

InstanceFreeWriteCU

The number of internal write CUs per second.

InstanceIntranetIn

The amount of inbound traffic over the internal network per second. Unit: bytes.

InstanceIntranetOut

The amount of outbound traffic over the internal network per second. Unit: bytes.

InstanceOverReadCU

The number of excess read CUs of an instance per second.

InstanceOverWriteCU

The number of excess write CUs of an instance per second.

InstanceReadCU

The number of read CUs for operations in an instance per second.

InstanceRequestNumber

The total number of requests per second.

InstanceRowCount

The total number of rows on which operations are performed per second.

InstanceVCU

The number of VCUs of an instance per second.

Tables (including data tables and secondary indexes)

AverageLatency

The average operation latency. Unit: microseconds.

Count2xxNumber

The number of requests that return status codes 2xx per second.

Count429Number

The number of requests that return status code 429 per second.

Count4xxNumber

The number of requests that return status codes 4xx per second.

Count5xxNumber

The number of requests that return status codes 5xx per second.

ExtranetIn

The amount of inbound traffic over the Internet per second. Unit: bytes.

ExtranetOut

The amount of outbound traffic over the Internet per second. Unit: bytes.

FailRowCount

The number of rows on which the operations failed per second.

FreeExtranetOut

The amount of free outbound traffic over the Internet per second. Unit: bytes.

StorageSize

The volume of data that is stored in the table. Unit: bytes.

FreeReadCU

The number of internal read CUs per second.

FreeWriteCU

The number of internal write CUs per second.

IntranetIn

The amount of inbound traffic over the internal network per second. Unit: bytes.

IntranetOut

The amount of outbound traffic over the internal network per second. Unit: bytes.

OverReadCU

The number of excess read CUs of a table per second.

OverWriteCU

The number of excess write CUs of a table per second.

ReadCU

The number of read CUs for operations per second.

RequestNumber

The total number of requests per second.

RowCount

The total number of rows on which operations are performed per second.

WriteCU

The number of write CUs for operations per second.

Time series tables

StorageSize

The volume of data that is stored in the table. Unit: bytes.

Tablestore metrics monitored by using the Tablestore console

Resource type

Metric

Description

Instances, tables (including data tables and secondary indexes), and search indexes

Number of requests per second

The average number of requests per minute.

The metrics include queries per second (QPS) for all requests and QPS for requests that return status codes 2xx, 4xx, 5xx, and 429.

Number of rows

The average number of rows on which operations are performed per minute.

The metrics include the total number of rows and the number of failed rows.

Traffic statistics

The average amount of traffic that is used per minute.

The metrics include inbound traffic over the Internet, outbound traffic over the Internet, inbound traffic over the internal network, outbound traffic over the internal network, and free outbound traffic over the Internet.

CapacityUnit

The average number of CUs that are consumed per minute.

The metrics include read CUs, write CUs, internal read CUs, and internal write CUs.

Request status statistics

The numbers and proportions of requests that return status codes such as 2xx, 4xx, 429, and 5xx.

Tables and search indexes

Average access latency

The average access latency per minute.

The metric is the request latency.

Tables

Table size

The volume of data that is stored in the table per minute.

Search indexes

Storage volume

The volume of data that is stored in the search index. Unit: bytes.

Number of rows

The number of rows that are synchronized from the data table to the search index.

Reserved read CUs

The number of reserved read CUs for the search index.

Alert rules

You can configure alert rules for various metrics in the CloudMonitor console. If the metric value of a resource meets the alert condition, CloudMonitor automatically sends notifications to specified recipients. The following table describes the alert severity, notification methods, and alert condition that you can configure for alert rules.

Alert severity

Notification method

Alert condition

Info

Email + DingTalk

The average value of the metric reaches the specified threshold for consecutive N cycles.

You can configure the value of N based on the alert severity.

Note

The alert condition varies based on the type of the metric that is used.