检查并比较Firebase Swift中消息的时间

我建议用 ,通过使用 NSDate().timeIntervalSince1970 * 1000 Date().getTime(); let date = Int64(NSDate().timeIntervalSince1970 * 1000) 在你的 date 日期

下面是一个关于如何开始使用cron的优秀教程: https://firebase.googleblog.com/2017/03/how-to-schedule-cron-jobs-with-cloud.html

你的cron作业需要被编码进去 node.js 会像这样:

// example cron job after setting everything up in the tutorial
    exports.hourly_job =
        functions.pubsub.topic('hourly-tick').onPublish((event) => {
        // get current date and time
        var currentDate = new Date();
        console.log("Hourly Deletion Ran at: " + currentDate);
        var currentNumMilliseconds = currentDate.getTime();
        // remove a days worth of time
        var oneDayAgo = currentNumMilliseconds - (3 * 24 * 60 * 1000);
        var cutoffDate = new Date(oneDayAgo);
        console.log("Query start at date: " + oneDayAgo);
        // the firebase database ref where your posts are stored
        const ref = admin.database().ref('posts');
        // query all posts more than a day old
        ref.orderByChild('date').startAt(oneDayAgo).once('value').then(function (snapshot) {
            // for each snapshot returned from the query that is older than one day, delete
            snapshot.forEach(function(childSnapshot) {
                var key = childSnapshot.key;
                var postObject = childSnapshot.val();   
                ref.child('key').remove();
            });

        });
    });