Overview

Datadog generates enhanced Lambda metrics from your Lambda runtime out-of-the-box with low latency, several second granularity, and detailed metadata for cold starts and custom tags.

Enhanced Lambda metrics give you a view above and beyond the default Lambda metrics enabled with the AWS Lambda integration. These metrics are distinguished by being in the aws.lambda.enhanced.* namespace, and are Datadog’s best practice for setting real-time monitors on your serverless application health.

Real-time enhanced Lambda metrics

The following real-time enhanced Lambda metrics are available, and they are tagged with the aws_account, region, functionname, cold_start, memorysize, executedversion, resource and runtime. These metrics are distributions, and you can query them using the count, min, max, sum, and avg aggregations.

aws.lambda.enhanced.invocations

Measures the number of times a function is invoked in response to an event or an invocation of an API call.

aws.lambda.enhanced.errors

Measures the number of invocations that failed due to errors in the function.

aws.lambda.enhanced.max_memory_used

Measures the maximum amount of memory (mb) used by the function.

aws.lambda.enhanced.duration

Measures the elapsed seconds from when the function code starts executing as a result of an invocation to when it stops executing.

aws.lambda.enhanced.billed_duration

Measures the billed amount of time the function ran for (100ms increments).

aws.lambda.enhanced.init_duration

Measures the initialization time (second) of a function during a cold start.

aws.lambda.enhanced.runtime_duration

Measures the elapsed milliseconds from when the function code starts executing to when it returns the response back to the client, excluding the post-runtime duration added by Lambda extension executions.

aws.lambda.enhanced.post_runtime_duration

Measures the elapsed milliseconds from when the function code returns the response back to the client to when the function stops executing, representing the duration added by Lambda extension executions.

aws.lambda.enhanced.response_latency

Measures the elapsed time in milliseconds from when the invocation request is received to when the first byte of response is sent to the client.

aws.lambda.enhanced.response_duration

Measures the elapsed time in milliseconds from when the first byte of response to the last byte of response is sent to the client.

aws.lambda.enhanced.produced_bytes

Measures the number of bytes returned by a function.

aws.lambda.enhanced.estimated_cost

Measures the total estimated cost of the function invocation (US dollars).

aws.lambda.enhanced.timeouts

Measures the number of times a function times out.

aws.lambda.enhanced.out_of_memory

Measures the number of times a function runs out of memory.

Enable enhanced Lambda metrics

Follow the installation instructions to set up instrumentation of your serverless applications. Enhanced Lambda metrics are enabled by default.

Viewing your dashboard

Once you’ve enabled Enhanced Lambda Metrics, view your default dashboard in the Datadog app.