Force lambda concurrent executions quota increase

concurrent_lambda_executions.py

import boto3
import json
import multiprocessing
from botocore.exceptions import ClientError

function_name = "hello-world-quota-limit"
payload = {
    "key1": "test-key1",
    "key2": "test-key2",
    "key3": "test-key3"
}
payload_bytes = json.dumps(payload).encode()

def invoke_lambda(index):
    try:
        client = boto3.client("lambda")
        response = client.invoke(
            FunctionName=function_name,
            InvocationType="RequestResponse",
            Payload=payload_bytes
        )

        status = response["ResponseMetadata"]["HTTPStatusCode"]
        result_raw = response["Payload"].read().decode()

        try:
            result = json.loads(result_raw)
        except json.JSONDecodeError:
            result = result_raw

        print(f"[{index}] ✅  HTTP {status} | result: {result}")
        return (status, result)

    except ClientError as e:
        code = e.response["Error"]["Code"]
        print(f"[{index}] ❌ ClientError: {code}")
        return (code, None)
    except Exception as e:
        print(f"[{index}] ❌ Exception: {e}")
        return (None, str(e))

if __name__ == "__main__":
    total = 50  # Number of concurrent invocations
    with multiprocessing.Pool(processes=total) as pool:
        results = pool.map(invoke_lambda, range(1, total + 1))

    throttled = sum(1 for status, _ in results if status == "TooManyRequestsException")
    ok = sum(1 for status, _ in results if status == 200)
    print(f"\nSUMMARY:\n✅ Success: {ok} / {total}\n🚫 Throttled: {throttled} / {total}")