Rajika Imal rajikaimal

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

byte-size tuts

by alexander white ©

golang tutorials

In this gist I would like to describe an idea for GraphQL subscriptions. It was inspired by conversations about subscriptions in the GraphQL slack channel and different GH issues, like #89 and #411.

Conceptual Model

At the moment GraphQL allows 2 types of queries:

query
mutation

Reference implementation also adds the third type: subscription. It does not have any semantics yet, so here I would like to propose one possible semantics interpretation and the reasoning behind it.

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Regular Event Loop

This shows the execution order given JavaScript's Call Stack, Event Loop, and any asynchronous APIs provided in the JS execution environment (in this example; Web APIs in a Browser environment)

Given the code

	from __future__ import division
	import string
	import math

	tokenize = lambda doc: doc.lower().split(" ")

	document_0 = "China has a strong economy that is growing at a rapid pace. However politically it differs greatly from the US Economy."
	document_1 = "At last, China seems serious about confronting an endemic problem: domestic violence and corruption."
	document_2 = "Japan's prime minister, Shinzo Abe, is working towards healing the economic turmoil in his own country for his view on the future of his people."
	document_3 = "Vladimir Putin is working hard to fix the economy in Russia as the Ruble has tumbled."

	//events - a super-basic Javascript (publish subscribe) pattern

	var events = {
	events: {},
	on: function (eventName, fn) {
	this.events[eventName] = this.events[eventName] \|\| [];
	this.events[eventName].push(fn);
	},
	off: function(eventName, fn) {
	if (this.events[eventName]) {

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	package src.LinkedList;

	public class LinkedList {
	public Node head;
	public int listCount;

	public LinkedList(){
	head = new Node(0);
	listCount = 0;
	}