How to create huge random document in MongoDB

Here are some functions that will help you to create a random string(name) and random date since 1950 untill 2000 and insert it into mongodb.

function getRandomInt(min, max) {    return Math.floor(Math.random() * (max - min + 1)) + min;}function getRandomDate() {    // aprox nr of days since 1970 untill 2000: 30years * 365 days    var nr_days1 = 30*365;    // aprox nr of days since 1950 untill 1970: 20years * 365 days    var nr_days2 = -20*365;    // milliseconds in one day    var one_day=1000*60*60*24    // get a random number of days passed between 1950 and 2000    var days = getRandomInt(nr_days2, nr_days1);    return new Date(days*one_day)}for (var i = 1; i <= 10000; i++) {      db.test.insert(     {       name : "name"+i,       birthday: getRandomDate()     }   ) }

I have try mgeneratejs, very easy to use, mgeneratejs

here is sample command, mgeneratejs print data to stdout, then use mongoimport import these data into mongod:

mongodb-osx-x86_64-4.0.1 $ mgeneratejs '{"name": "$name", "age": "$age", "emails": {"$array": {"of": "$email", "number": 3}}}' -n 5 | mongoimport --uri mongodb://localhost:27017/test --collection user --mode insert2018-08-09T16:19:13.295+0800    connected to: localhost2018-08-09T16:19:14.544+0800    imported 5 documents

Best way will be read off docs about random generate in mongodb.https://docs.mongodb.com/v2.6/tutorial/generate-test-data/Also you could use special service for generate random data.For example:https://www.mockaroo.com/