Using Lambda Insights - Amazon CloudWatch

Using Lambda Insights

Lambda Insights is in Preview. The preview is open to all AWS accounts and you do not need to request access. Features may be added or changed before announcing General Availability.

CloudWatch Lambda Insights is a monitoring and troubleshooting solution for serverless applications running on AWS Lambda. The solution collects, aggregates, and summarizes system-level metrics including CPU time, memory, disk, and network. It also collects, aggregates, and summarizes diagnostic information such as cold starts and Lambda worker shutdowns to help you isolate issues with your Lambda functions and resolve them quickly.

Lambda Insights uses a new CloudWatch Lambda extension, which is provided as a Lambda layer. When you install this extension on a Lambda function, it collects system-level metrics and emits a single performance log event for every invocation of that Lambda function. CloudWatch uses embedded metric formatting to extract metrics from the log events.

For more information about Lambda extensions, see Using AWS Lambda extensions. For more information about embedded metric format, see Ingesting High-Cardinality Logs and Generating Metrics with CloudWatch Embedded Metric Format.

You can use Lambda Insights with any Lambda function that uses any of the following runtimes:

  • .NET Core 3.1 (C#/PowerShell) (dotnetcore3.1)

  • Custom runtime (provided)

  • Custom runtime on Amazon Linux 2

  • Java 11 (Corretto) (java11)

  • Java 8 (Corretto) (java8.al2)

  • Node.js 12.x (nodejs12.x)

  • Node.js 10.x (nodejs10.x)

  • Python 3.8 (python3.8)

  • Python 3.7 (python3.7)

  • Ruby 2.7 (ruby2.7)

  • Ruby 2.5 (ruby2.5)


For each Lambda function enabled for Lambda Insights, you only pay for what you use for metrics and logs. For a pricing example, see Amazon CloudWatch Pricing.

You are charged for the execution time consume by the Lambda extension, in 100ms increments. For more information about Lambda pricing, see AWS Lambda Pricing.

Region availability

For this preview release, Lambda Insights is currently available in the following AWS Regions:

  • US East (N. Virginia)

  • US East (Ohio)

  • US West (N. California)

  • US West (Oregon)

  • Africa (Cape Town)

  • Asia Pacific (Hong Kong)

  • Asia Pacific (Mumbai)

  • Asia Pacific (Seoul)

  • Asia Pacific (Singapore)

  • Asia Pacific (Sydney)

  • Asia Pacific (Tokyo)

  • Canada (Central)

  • China (Beijing)

  • China (Ningxia)

  • Europe (Frankfurt)

  • Europe (Ireland)

  • Europe (London)

  • Europe (Milan)

  • Europe (Paris)

  • Europe (Stockholm)

  • Middle East (Bahrain)

  • South America (São Paulo)