I am newbie with MongoDB. I'm trying to create a database which will be included 10,000 data. The data will contain "username" and "Birthday".
I want to create 10,000 data with random username and birthday. Do we have a fastest way to create this kind of database?.
Thank you so much for your help!
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()
}
)
}
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/
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 insert
2018-08-09T16:19:13.295+0800 connected to: localhost
2018-08-09T16:19:14.544+0800 imported 5 documents
