FileWriteRead

fileWriteRead.js

var start = new Date();
var fs = require('fs');

var arr = [];
// Large Loop
for (var i = 0; i < 10000000; ++i) {
    arr.push({x : i});
}

fs.writeFile('largefile.txt', JSON.stringify(arr), function(err){
    if (err) {
        return console.log(err);
    }
    console.log('Write Time = ' + (new Date() - start) + 'ms');
    var end = new Date();
    fs.readFile('largefile.txt', function(error, data){
        if (error) {
            return console.log(err);
        }
        var res = JSON.parse(data);
        var readTime = new Date() - end;
        console.log('Read and parse time = ' + readTime + 'ms');
    });
});