tankala’s gists

tankala / AppJsWithTimeMeasurement.js

Created July 21, 2018 13:32

Review your Express.js application performance by yourself

	// Section 1
	var express = require('express');
	const bodyParser = require('body-parser');
	const { EventEmitter } = require('events');
	const morgan = require('morgan');
	const app = express();
	const profilingEventEmitter = new EventEmitter();

	// Section 2
	profilingEventEmitter.on('middleware', ({ req, name, elapsedMS }) => {

tankala / ParallelizingTasksInJava.java

Last active July 1, 2018 10:49

Downloading 2 avatars in parallel at a time in Java

	import java.util.Arrays;
	import java.util.List;
	import java.util.concurrent.Executors;
	import java.util.concurrent.ThreadPoolExecutor;
	import java.io.InputStream;
	import java.net.URL;
	import java.nio.file.Files;
	import java.nio.file.Paths;
	import java.nio.file.StandardCopyOption;

tankala / ParallelizingTasksInNode.js

Created July 1, 2018 10:01

Downloading 2 avatars in parallel at a time using Async in Node.js

	const request = require('request');
	const fs = require('fs');
	const async = require('async');

	const avatarsNamesArray = ['1.png','2.png','3.png','4.png','5.png','6.png','7.png','8.png','9.png','10.png'];

	getAndStoreAvatar = function(avatarName, callback) {
	console.log(avatarName + ' is downloading');
	let stream = request
	.get('https://api.adorable.io/avatars/285/' + avatarName)

tankala / index.js

Created June 9, 2018 11:28

Code for building static content server using Node.js

	var express = require('express');
	var app = express();

	//Serves resources from public folder
	app.use(express.static('public'));

	app.listen(3000);

tankala / jsonData.json

Created June 9, 2018 11:26

JSON data which can be used to populate table

tankala / table.html

Created June 9, 2018 11:24

HTML code for populating table with data which is present in json file with name jsonData.json

	<!DOCTYPE html>
	<html>

	<head>
	<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
	<script>
	function onLoad() {
	var url = 'jsonData.json';
	$.getJSON(url, function (json) {
	var table = $('<table>');

tankala / mnistTensorFlowJS.html

Created May 26, 2018 19:38

MNIST Example using TensorFlow.js

	<html>

	<head>
	<title>MNIST</title>
	<script src="https://cdn.jsdelivr.net/npm/@tensorflow/[email protected]"> </script>
	<script type="text/javascript">
	// Variables for referencing the canvas and 2dcanvas context
	var canvas, ctx;

	// Variables to keep track of the mouse position and left-button status

tankala / listFilesInFolder.js

Created May 23, 2018 08:02

List all files in a directory in Node.js recursively

	//We can use fs.readdir or fs.readdirSync methods
	const fs = require('fs');
	const testFolder = __dirname + '/files/';

	//Asynchronous way
	fs.readdir(testFolder, (err, files) => {
	files.forEach(file => {
	console.log(file);
	});
	})

tankala / KafkaProducer.js

Created April 24, 2018 15:22

Kafka Producer in Node.js

	var kafka = require('kafka-node');

	var producer = null;
	var readyFlag = false;

	var BaseModel = function () {
	};

	BaseModel.prototype.produceJob = function (topic, pload, isBatchProducer, callback) {
	module.exports.getProducer(topic, pload, isBatchProducer);

tankala / ConsumerGroupInitiation.js

Last active April 24, 2018 15:08

Consumer Group Initiation in Node.js

	var kafka = require('kafka-node');

	exports.initiateKafkaConsumerGroup = function (groupName, topicName) {
	var options = {
	// connect directly to kafka broker (instantiates a KafkaClient)
	kafkaHost: '127.0.0.1:9092',
	groupId: groupName,
	autoCommit: true,
	autoCommitIntervalMs: 5000,
	sessionTimeout: 15000,

Tankala Ashok tankala