import { RedisClientType, RedisClusterType } from 'redis';
import { CacheConfig } from './types.js';
/**
 * Represents a Redis cache connection class.
 */
export default class Redis {
    private static singletonMap;
    /**
     * A private static property that holds a reference to the redis.createClient function.
     * This property is used to create client.
     */
    private static ClientFactory;
    /**
     * A private static property that references the createCluster function.
     * This property can be used to create clusters within the class.
     */
    private static ClusterFactory;
    static connection(config: CacheConfig<'redis'>): Promise<RedisClientType | RedisClusterType>;
    private static clearSingletons;
    private static cacheKey;
    private static connectionFactory;
    /**
     * Establishes a connection to a Redis client based on the provided configuration
     * and holds it for reusability. If connection is detected closed, new connection is
     * initialized and established.
     * @param {CacheConfig<'redis'>} config - The configuration object for connecting to the Redis client.
     * @returns {Promise<RedisClientType>} A promise that resolves to the Redis client connection.
     */
    private static redisClientConnection;
    private static redisClusterConnection;
}