import { Redis } from 'ioredis';
export declare class RedisClient {
    private config;
    redis?: Redis;
    constructor(config: {
        url: string;
    } & {
        [key: string]: any;
    });
    init(): Promise<void>;
    get(key: string): Promise<string | null>;
    set(key: string, value: string, ex?: number): Promise<void>;
    delete(key: string): Promise<void>;
    getJson<T>(key: string): Promise<T | null>;
    setJson<T>(key: string, value: T, ex?: number): Promise<void>;
}