node.js - nodejs asynchronously reading continuously growing file -


i trying read text file continuously growing (adding new lines @ end) high rate, lets ~100 lines per seconds line size approximate 200 characters.

i tried following , working lagging minute , so.

var fs = require('fs'); var path = "d:\\testreadwrite.txt";  fs.watchfile(path, function() {     console.log('file changed ...');     file = fs.readfilesync(path);     console.log('file content @ : ' + new date() + ' \n' + file);     });

i not need synchronous reading lagging > 1 minute high, , need entire file each time. need , read data , process line line, each new line coming. tried below code planning loop through , pass offset each iteration. code not working unknown reasons. please help.

var fs = require('fs'); var path = "d:\\work\\jai ho\\myapp\\public\\testreadwrite.txt"; fs.watch(path, function(event, filename) {   if(filename){             fs.stat(path, function(error, stats) {               fs.open(path, "r", function(error, fd) {                var buffer = new buffer(stats.size);                 fs.read(fd, buffer, 0, buffer.length, null, function(error, bytesread, buffer) {                   var data = buffer.tostring("utf8");                   console.log(data);                 });               });             });    }   else{     console.log('filename not provided')   } });


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