import { Quota } from './quota';
import { QuotaManager } from './quotaManager';
import { RedisClient } from 'redis';
import * as IORedis from 'ioredis';
declare type RedisCompatibleClient = RedisClient | IORedis.Redis | IORedis.Cluster;
/** QuotaManager that coordinates rate limits across servers. */
export declare class RedisQuotaManager extends QuotaManager {
    private readonly channelQuota;
    private readonly heartbeatInterval;
    private readonly uniqueId;
    private readonly pubSubClient;
    private readonly pingsReceived;
    private readonly channelName;
    private readonly client;
    private _ready;
    private heartbeatTimer;
    /**
     * @param channelQuota the overall quota to be split among all clients
     * @param channelName unique name for this quota - the Redis pub/sub channel name
     * @param client a Redis client (or a pair of Redis clients if using a specialty Redis library)
     * @param heartbeatInterval how often to ping the Redis channel (milliseconds)
     */
    constructor(channelQuota: Quota, channelName: string, client: RedisCompatibleClient | RedisCompatibleClient[], heartbeatInterval?: number);
    /** true once the Quota Manager has discovered its peers and calculated its quota */
    get ready(): boolean;
    /** Join the client pool, coordinated by the shared channel on Redis */
    private register;
    /** Send a ping to the shared Redis channel */
    private ping;
    /** Receive client pings */
    private message;
    /** Remove outdated clients */
    private removeOutdatedClients;
    /** Calculate our portion of the overall channel quota */
    private updateQuota;
    /** Let the others know we’re here */
    private heartbeat;
}
export {};