import { OnApplicationShutdown } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { Cache } from 'cache-manager';
import Redis from 'ioredis';
export declare class CacheService implements OnApplicationShutdown {
    private readonly redis;
    private cacheManager;
    private readonly configService;
    constructor(redis: Redis, cacheManager: Cache, configService: ConfigService);
    onApplicationShutdown(): void;
    useRedis(): boolean;
    read(key: string): Promise<any>;
    write(key: string, value: any, ttl: number): Promise<void>;
    del(key: string): Promise<void>;
}