Question

我正在尝试使用Redis TTL启动延迟过程。

为了最小化问题，我只在一台机器上开始订阅键空间通知。

使用Redis创建连接

createClient() {
    if (!this.client) {
        var options = {
            host: 'host',
            port: 'port',
            masterName: 'masterName'
        }
        if (REDIS_AUTH == 1) {
            options.master_auth_pass = REDIS_PASS
        }

        this.client = sentinel.createClient(options);
        this.client.on('ready', () => {

            logger.info('redis -> createClient -> on ready');

            this.client.getMaster().config('SET', 'notify-keyspace-events', 'Ex');
        });

        this.client.on('switch master', () => {

            logger.info('redis -> createClient -> on switch master');

            this.client.getMaster().config('SET', 'notify-keyspace-events', 'Ex');

        });

    }
}

psubscribe(paramKey) {
        this.redis.client = null;

        if (!this.clientSubscribe) {
            this.redis.createClient();
            this.clientSubscribe = this.redis.client;
            this.redis.client = null;
        }

        this.clientSubscribe.on('connect', () => {
            this._psubscribe_reconect(paramKey);
        });

        this.clientSubscribe.on('reconnecting', () => {
            this._psubscribe_reconect(paramKey);
        });

    }
_psubscribe_reconect(paramKey) {

        this.clientSubscribe.on('message', this.onMessage.bind(this));

        paramKey.forEach(element => {
            this.clientSubscribe.subscribe(element);
        });

    }

收到通知时

    onMessage(paramChannel, paramMessage) {
        const functionName = 'onMessage';
        this.Logger.debug(`Recebeu uma mensagem no canal ${paramChannel}`, paramMessage, this.CLASS_NAME, functionName);
    }

当前结果是，有一段时间我收到了多个事件。示例：

[2019-04-12T10：09：57-03：00]：调试Recebeu uma mensagem no canal keyevent @ 0 ：已过期REMINDER：DELAY：5cb08b941f0f3f008119f81d RedisSubcriber onMessage [2019-04-12T10：09：57-03：00]：调试Recebeu uma mensagem no canal keyevent @ 0 ：expired REMINDER：DELAY：5cb08b941f0f3f008119f81d RedisSubcriber onMessage [2019-04-12T10：09：57-03：00]：调试Recebeu uma mensagem no canal keyevent @ 0 ：expired REMINDER：DELAY：5cb08b941f0f3f008119f81d RedisSubcriber onMessage [2019-04-12T10：09：57-03：00]：调试Recebeu uma mensagem no canal keyevent @ 0 ：expired REMINDER：DELAY：5cb08b941f0f3f008119f81d RedisSubcriber onMessage [2019-04-12T10：09：57-03：00]：调试Recebeu uma mensagem no canal keyevent @ 0 ：expired REMINDER：DELAY：5cb08b941f0f3f008119f81d RedisSubcriber onMessage [2019-04-12T10：09：57-03：00]：调试Recebeu uma mensagem no canal keyevent @ 0 ：expired REMINDER：DELAY：5cb08b941f0f3f008119f81d RedisSubcriber onMessage

如何解决这个问题？

正常的Redis键空间通知是否每个键发送多个通知？

0 个答案: