@xyz/whois/src/utils/cache.ts

A powerful TypeScript/JavaScript tool for comprehensive domain analysis, featuring detailed WHOIS data with registration dates, registrars, and domain status. Offers SSL certificate extraction (with PEM support), DNS records, and server details. Includes

import { WhoisData } from '../whois';

const CACHE_TTL = 3600000; // 1 hour cache
const whoisCache = new Map<string, { data: WhoisData; timestamp: number }>();

/**
 * Gets cached WHOIS data if available and not expired
 * @param domain The domain to get cached data for
 * @returns Cached WHOIS data or undefined if not available or expired
 */
export function getCachedWhoisData(domain: string): WhoisData | undefined {
  const cached = whoisCache.get(domain);
  if (cached && Date.now() - cached.timestamp < CACHE_TTL) {
    return cached.data;
  }
  return undefined;
}

/**
 * Caches WHOIS data for a domain
 * @param domain The domain to cache data for
 * @param data The WHOIS data to cache
 */
export function cacheWhoisData(domain: string, data: WhoisData): void {
  whoisCache.set(domain, {
    data,
    timestamp: Date.now(),
  });
}

/**
 * Clears the WHOIS cache
 */
export function clearWhoisCache(): void {
  whoisCache.clear();
}