import { SwappableSettingsStorageInterface } from './entities/swappable-settings-storage.interface';
export declare class SwappableSettingsService {
    private readonly storage;
    private readonly prefix;
    constructor(storage: SwappableSettingsStorageInterface);
    get(key: string): Promise<any | null>;
    set(key: string, value: string, redisEx?: string, redisTtl?: number): Promise<void>;
    delete(key: string): Promise<void>;
}