import { EventBus } from './EventBus';
/**
 * RedisBus 是通过 Redis Pub/Sub 实现的事件总线
 * 注意：你需要先安装 ioredis：npm i ioredis
 */
export declare class RedisBus extends EventBus {
    private pub;
    private sub;
    private readonly channelPrefix;
    constructor(redisUrl: string);
    start(): Promise<void>;
    emit(eventName: string, payload: any): Promise<void>;
    stop(): Promise<void>;
}