Igor igorkosta

The introduction to Reactive Programming you've been missing

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.

auth with microservices

Authorization and Authentication are hard. when you only have to implement them once (as you do within a monolith) instead of over and over again, it makes the developer happy :-), and maybe leads to less implementation failures.

When you have a bunch of microservices, this is something that has to be considered.

Implement it once or in every microservice, or something in between?

Eric Elliott's "Composing Software" Series

A collection of links to the excellent "Composing Software" series of medium stories by Eric Elliott.

Edit: I see that each post in the series now has index, previous and next links. However, they don't follow a linear flow through all the articles with some pointing back to previous posts effectively locking you in a loop.

	module PostRepresenter
	include Representer
	using Representer

	def basic(post)
	select(post, :id, :name)
	end

	def details(post)
	basic(post) & comments(post)

	AWSTemplateFormatVersion: '2010-09-09'
	Description: Cognito Stack
	Parameters:
	AuthName:
	Type: String
	Description: Unique Auth Name for Cognito Resources

	Resources:

	# Creates a role that allows Cognito to send SNS messages

	/**
	* Axios Request Wrapper
	* ---------------------
	*
	* @author Sheharyar Naseer (@sheharyarn)
	* @license MIT
	*
	*/

	import axios from 'axios'

	[
	{"group":"US (Common)",
	"zones":[
	{"value":"America/Puerto_Rico","name":"Puerto Rico (Atlantic)"},
	{"value":"America/New_York","name":"New York (Eastern)"},
	{"value":"America/Chicago","name":"Chicago (Central)"},
	{"value":"America/Denver","name":"Denver (Mountain)"},
	{"value":"America/Phoenix","name":"Phoenix (MST)"},
	{"value":"America/Los_Angeles","name":"Los Angeles (Pacific)"},
	{"value":"America/Anchorage","name":"Anchorage (Alaska)"},

	{
	"USD": {
	"symbol": "$",
	"name": "US Dollar",
	"symbol_native": "$",
	"decimal_digits": 2,
	"rounding": 0,
	"code": "USD",
	"name_plural": "US dollars"
	},

	'use strict'
	const EventEmitter = require('events')

	// default expiry 3 mins
	const DEFAULT_EXPIRY = 3 * 60 * 1000

	const create = ({ keys, ssm, keyPrefix = '', expiryMs = DEFAULT_EXPIRY }) => {
	let isRefreshing = false
	if (!keys \|\| !Array.isArray(keys) \|\| keys.length === 0) {
	throw new Error('Provide a non-empty array of config keys')