CCSS (Common Configuration Scoring System) is a set of measures used to determine the severity of the rule.
Each rule is associated with a high-level category. For example IAM, Container, Monitoring, Logging, Network, etc.
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Description
Ensure that the function can scale without impacting other resources and maintain predictable performance and cost by defining a specific number of reserved concurrent executions. Omitting or disabling ReservedConcurrentExecutions for AWS Lambda functions can lead to uncontrolled scaling, which may result in throttling, increased latency, or higher costs due to excessive executions.
How to fix?
Set the reserved_concurrent_executions attribute in the aws_lambda_function resource to a positive of at least 1.
Example Configuration
resource "aws_lambda_function" "allowed1_lambda" {
filename = "lambda_function_payload.zip"
function_name = "lambda_function_allowed745"
role = aws_iam_role.iam_for_lambda.arn
handler = "index.test"
source_code_hash = data.archive_file.allowed1_file.output_base64sha256
runtime = "nodejs18.x"
reserved_concurrent_executions = 200
}