import { RedisClientType } from "redis";
type RedisClientFactory = (options: {
    url: string;
}) => RedisClientType;
export declare class CacheService {
    private config;
    private clientFactory;
    private client;
    private connected;
    private memoryCache;
    constructor(config: {
        url: string;
        ttl: number;
    }, clientFactory?: RedisClientFactory);
    connect(): Promise<void>;
    get<T>(key: string): Promise<T | null>;
    set<T>(key: string, value: T, ttl?: number): Promise<void>;
    delete(key: string): Promise<void>;
    flush(): Promise<void>;
    private normalizeKey;
    private normalizeTtl;
    private cleanupMemoryCache;
    disconnect(): Promise<void>;
}
export {};
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