GetFunctionConcurrency

Returns details about the reserved concurrency configuration for a function. To set a concurrency limit for a function, use PutFunctionConcurrency.

Request Syntax


GET /2019-09-30/functions/FunctionName/concurrency HTTP/1.1

The request uses the following URI parameters.

The name or ARN of the Lambda function.

Function name – my-function.
Function ARN – arn:aws:lambda:us-west-2:123456789012:function:my-function.
Partial ARN – 123456789012:function:my-function.

The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.

Length Constraints: Minimum length of 1. Maximum length of 140.

Pattern: (arn:(aws[a-zA-Z-]*)?:lambda:)?([a-z]{2}(-gov)?-[a-z]+-\d{1}:)?(\d{12}:)?(function:)?([a-zA-Z0-9-_]+)(:(\$LATEST|[a-zA-Z0-9-_]+))?

Required: Yes

The request does not have a request body.


HTTP/1.1 200
Content-type: application/json

{
   "ReservedConcurrentExecutions": number
}

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

The number of simultaneous executions that are reserved for the function.

Type: Integer

Valid Range: Minimum value of 0.

For information about the errors that are common to all actions, see Common Errors.

InvalidParameterValueException

One of the parameters in the request is not valid.

HTTP Status Code: 400

ResourceNotFoundException

The resource specified in the request does not exist.

HTTP Status Code: 404

ServiceException

The AWS Lambda service encountered an internal error.

HTTP Status Code: 500

TooManyRequestsException

The request throughput limit was exceeded. For more information, see Lambda quotas.

HTTP Status Code: 429