declare class Cache {
    private cache;
    private defaultTTL;
    set(key: string, data: any, ttl?: number): void;
    get(key: string): any | null;
    has(key: string): boolean;
    delete(key: string): boolean;
    clear(): void;
    size(): number;
    cleanup(): void;
}
export declare const cache: Cache;
export {};
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