mcp-duckduckgo-search/dist/cache.js

MCP server for DuckDuckGo search

import { CACHE_TTL } from './config.js';
class SearchCache {
    constructor() {
        this.cache = new Map();
    }
    get(key) {
        const entry = this.cache.get(key);
        if (!entry) {
            return null;
        }
        // Check if cache entry has expired
        if (Date.now() - entry.timestamp > CACHE_TTL) {
            this.cache.delete(key);
            return null;
        }
        return entry.data;
    }
    set(key, data) {
        this.cache.set(key, {
            timestamp: Date.now(),
            data,
        });
    }
    clear() {
        this.cache.clear();
    }
    // Clean expired entries
    clean() {
        const now = Date.now();
        for (const [key, entry] of this.cache.entries()) {
            if (now - entry.timestamp > CACHE_TTL) {
                this.cache.delete(key);
            }
        }
    }
    // Get cache key from search parameters
    static get_cache_key(params) {
        return JSON.stringify(params);
    }
}
// Export singleton instance
export const search_cache = new SearchCache();