import { KeyType, ValueType } from 'ioredis';
declare type RedisOptions = {
    databaseIndex: number;
    host: string;
    port: number;
};
export declare class RedisClient {
    private readonly client;
    private readonly options;
    private static instance?;
    constructor(options: RedisOptions);
    static getInstance(): RedisClient;
    set(key: KeyType, value: ValueType): Promise<void>;
    setExpire(params: {
        key: KeyType;
        value: ValueType;
        time: number;
    }): Promise<void>;
    get(key: KeyType): Promise<string | null>;
    delete(key: KeyType): Promise<number>;
    getList(keyList: KeyType[]): Promise<Array<string | null>>;
    setList(keyValueList: {
        key: string;
        value: string;
    }[]): Promise<[Error | null, any][]>;
    setExpireList(keyValueList: {
        key: string;
        value: string;
        time: string;
    }[]): Promise<[Error | null, any][]>;
    deleteList(keyList: string[]): Promise<[Error | null, any][]>;
}
export {};