/**
 * Represents an in-memory cache with TTL (Time To Live) support.
 */
export declare class Cache {
    private cache;
    private maxCacheCap;
    /**
     * Creates an instance of Cache.
     */
    constructor();
    /**
     * Calculates the maximum capacity of the cache based on available system memory.
     * @returns The maximum capacity of the cache.
     */
    private calculateMaxCapacity;
    /**
     * Retrieves the value associated with the specified key from the cache.
     * @param key - The key to look up in the cache.
     * @returns The cached value if found and not expired; otherwise, returns null.
     */
    get(key: string): any | null;
    /**
     * Stores a key-value pair in the cache with a specified TTL (Time To Live).
     * @param key - The key to store in the cache.
     * @param value - The value to associate with the key.
     * @param ttl - The TTL (Time To Live) in seconds for the cached entry.
     */
    set(key: string, value: any, ttl: number): void;
    /**
     * Removes the entry with the specified key from the cache.
     * @param key - The key to delete from the cache.
     */
    delete(key: string): void;
    /**
     * Checks if the cache contains an entry with the specified key.
     * @param key - The key to check in the cache.
     * @returns True if the cache contains the key; otherwise, false.
     */
    has(key: string): boolean;
}