/// <reference types="node" />
/// <reference types="express-serve-static-core" />
import LRUCache from "lru-cache";
import { BaseCache } from "./base";
export declare class MemoryCache extends BaseCache {
    cache: LRUCache<string, Buffer>;
    constructor(options?: LRUCache.Options<string, Buffer>);
    get(key: string, _req?: Express.Request): Buffer | undefined;
    set(key: string, image: Buffer, _req?: Express.Request): void;
}