Amazon Quantum Ledger Database (Amazon QLDB)
Developer Guide

Monitoring with Amazon CloudWatch

You can monitor Amazon QLDB using CloudWatch, which collects and processes raw data from Amazon QLDB into readable, near-real-time metrics. It records these statistics for two weeks so that you can access historical information and gain a better perspective on how your web application or service is performing. By default, QLDB metric data is automatically sent to CloudWatch in 1 or 15-minute periods. For more information, see What Are Amazon CloudWatch, Amazon CloudWatch Events, and Amazon CloudWatch Logs? in the Amazon CloudWatch User Guide.

How Do I Use QLDB Metrics?

The metrics reported by QLDB provide information that you can analyze in different ways. The following list shows some common uses for the metrics. These are suggestions to get you started, not a comprehensive list.

  • You can monitor JournalStorage and IndexedStorage over a specified time period, to track how much disk space your ledger is consuming.

  • You can monitor ReadIOs and WriteIOs over a specified time period, to track how many requests your ledger is processing.

  • You can monitor CommandLatency to track your ledger's performance for data operations and analyze the types of commands that result in the most latency.

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