import LRUCache from 'lru-cache';
import { SubdomainClone } from './SubdomainClone';
import { GatewayConfig } from './index';
/**
 * All mutating access to the cache should be serialised with m-ld states
 */
export declare class SubdomainCache extends LRUCache<string, SubdomainClone> {
    constructor(config: GatewayConfig);
    clear(): Promise<void>;
}