/**
 * Cache Plugin
 *
 * Caches GET request responses to reduce load on Elasticsearch
 */
import type { Plugin, CachePluginConfig } from '../types.js';
/**
 * Create cache plugin
 */
export declare function createCachePlugin(config?: CachePluginConfig): Plugin;
/**
 * Get cache statistics
 */
export declare function getCacheStats(plugin: Plugin): {
    size: number;
    hits: number;
    misses: number;
    hitRatio: number;
} | null;