export declare class CacheManager<VideoValue = unknown, CommentValue = unknown> {
    private videoCache;
    private commentCache;
    private videoWeights;
    private commentWeights;
    private videoBytes;
    private commentBytes;
    private cacheStats;
    constructor();
    private estimateBytes;
    private removeVideoWeight;
    private removeCommentWeight;
    private makeVideoRoom;
    private makeCommentRoom;
    getVideoInfo(key: string): VideoValue | undefined;
    setVideoInfo(key: string, value: VideoValue): void;
    deleteVideoInfo(key: string): void;
    getCommentInfo(key: string): CommentValue | undefined;
    setCommentInfo(key: string, value: CommentValue): void;
    deleteCommentInfo(key: string): void;
    getStats(): typeof this.cacheStats;
    clear(): void;
    generateKey(prefix: string, ...args: unknown[]): string;
}
export declare const cacheManager: CacheManager<unknown, unknown>;
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