/**
 * @public
 *
 * The base number of milliseconds to use in calculating a suitable cool-down
 * time when a retryable error is encountered.
 */
export declare const DEFAULT_RETRY_DELAY_BASE = 100;
/**
 * @public
 *
 * The maximum amount of time (in milliseconds) that will be used as a delay
 * between retry attempts.
 */
export declare const MAXIMUM_RETRY_DELAY: number;
/**
 * @public
 *
 * The retry delay base (in milliseconds) to use when a throttling error is
 * encountered.
 */
export declare const THROTTLING_RETRY_DELAY_BASE = 500;
/**
 * @public
 *
 * Initial number of retry tokens in Retry Quota
 */
export declare const INITIAL_RETRY_TOKENS = 500;
/**
 * @public
 *
 * The total amount of retry tokens to be decremented from retry token balance.
 */
export declare const RETRY_COST = 5;
/**
 * @public
 *
 * The total amount of retry tokens to be decremented from retry token balance
 * when a throttling error is encountered.
 */
export declare const TIMEOUT_RETRY_COST = 10;
/**
 * @public
 *
 * The total amount of retry token to be incremented from retry token balance
 * if an SDK operation invocation succeeds without requiring a retry request.
 */
export declare const NO_RETRY_INCREMENT = 1;
/**
 * @public
 *
 * Header name for SDK invocation ID
 */
export declare const INVOCATION_ID_HEADER = "amz-sdk-invocation-id";
/**
 * @public
 *
 * Header name for request retry information.
 */
export declare const REQUEST_HEADER = "amz-sdk-request";