import type Redis from 'ioredis';
import { BaseCacheProvider } from './base-cache.provider';
/**
 * Token for injecting Redis client
 */
export declare const REDIS_CLIENT: unique symbol;
/**
 * Redis cache provider using ioredis
 *
 * This is the L3 cache layer - distributed caching using Redis.
 * Data is persisted in Redis and shared across all processes/servers.
 *
 * Slowest but most persistent and widely shared cache layer.
 */
export declare class RedisCacheProvider extends BaseCacheProvider {
    private readonly redis?;
    private readonly logger;
    private readonly keyPrefix;
    constructor(redis?: Redis);
    getName(): string;
    get<T>(key: string): Promise<T | null>;
    set<T>(key: string, value: T, ttl?: number): Promise<void>;
    delete(key: string | string[]): Promise<void>;
    deletePattern(pattern: string): Promise<number>;
    clear(): Promise<void>;
    has(key: string): Promise<boolean>;
    /**
     * Batch get using Redis MGET
     */
    mget<T>(keys: string[]): Promise<(T | null)[]>;
    /**
     * Batch set using Redis pipeline
     */
    mset(items: Array<{
        key: string;
        value: any;
    }>, ttl?: number): Promise<void>;
    /**
     * Check if Redis client is available
     */
    isAvailable(): boolean;
    /**
     * Get Redis client (for advanced usage)
     */
    getClient(): Redis | undefined;
    /**
     * Get full key with prefix
     */
    private getFullKey;
}