When requests to Step Function fail, Workflow Service performs exponential backoff retries to notify Step Function service.

private static final int DEFAULT_MAX_RETRY = 5;
private static final int MAX_RETRY = 10;
private static final double BACKOFF_MULTIPLIER = 1.5;
private static final long DEFAULT_INITIAL_RETRY_INTERVAL = 1000L;
private static final long MAX_RETRY_INTERVAL = 30000L;

private static final Logger log = LoggerFactory.getLogger(StepFunctionWorkflowServiceClient.class);

private int maxRetry;
private double backoffMultiplier;
private long initialRetryInterval;
private long maxRetryInterval;

private final String endpoint;
private final String accessKey;
private final String secretKey;

public StepFunctionWorkflowServiceClient(String endpoint, String accessKey, String secretKey) {
    this(endpoint, accessKey, secretKey, DEFAULT_INITIAL_RETRY_INTERVAL, MAX_RETRY_INTERVAL, BACKOFF_MULTIPLIER, MAX_RETRY, DEFAULT_MAX_RETRY);
}

public StepFunction