Datadog Lambda Library for Go
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Datadog Lambda Library for Go

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Datadog Lambda Library for Go enables enhanced Lambda metrics, distributed tracing, and custom metric submission from AWS Lambda functions.


Follow the installation instructions, and view your function’s enhanced metrics, traces and logs in Datadog.

Enhanced Metrics

Once installed, you should be able to view enhanced metrics for your Lambda function in Datadog.

Check out the official documentation on Datadog Lambda enhanced metrics.

Custom Metrics

Once installed, you should be able to submit custom metrics from your Lambda function.

Check out the instructions for submitting custom metrics from AWS Lambda functions.


Use ddlambda.AddTraceHeaders(ctx, req) to inject the Datadog tracing headers to the outbound requests.

  req, err := http.NewRequest("GET", "", nil)
  // Use the same Context object given to your lambda handler.
  // If you don't want to pass the context through your call hierarchy, you can use ddlambda.GetContext()
  ddlambda.AddTraceHeaders(ctx, req)

  client := http.Client{}

Environment Variables


Set to true (recommended) to send custom metrics asynchronously (with no added latency to your Lambda function executions) through CloudWatch Logs with the help of Datadog Forwarder. Defaults to false. If set to false, you also need to set DD_API_KEY and DD_SITE.


If DD_FLUSH_TO_LOG is set to false (not recommended), the Datadog API Key must be defined.


If DD_FLUSH_TO_LOG is set to false (not recommended), and your data need to be sent to the Datadog EU site, you must set DD_SITE to Defaults to


Set to debug enable debug logs from the Datadog Lambda Library. Defaults to info.


Generate enhanced Datadog Lambda integration metrics, such as, aws.lambda.enhanced.invocations and aws.lambda.enhanced.errors. Defaults to true.

Opening Issues

If you encounter a bug with this package, we want to hear about it. Before opening a new issue, search the existing issues to avoid duplicates.

When opening an issue, include the datadog-lambda-go version, go version, and stack trace if available. In addition, include the steps to reproduce when appropriate.

You can also open an issue for a feature request.


If you find an issue with this package and have a fix, please feel free to open a pull request following the procedures.


Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.

This product includes software developed at Datadog ( Copyright 2020 Datadog, Inc.