Norik Davtian NorikDavtian

Cloud Native (Containers, Microservices, Orchastration)

Microservices

https://docs.microsoft.com/en-us/azure/architecture/microservices/ https://docs.microsoft.com/en-us/azure/architecture/microservices/domain-analysis Not too big, and not too small https://docs.microsoft.com/en-us/azure/architecture/microservices/microservice-boundaries

Architecture

Learn Go Lang: Expedited

This is my take on learning go and experimenting with it, again.
Learning a new language is often times a lot of back and forth between I got it and hmm what's next?
It is easy to get started but what is past the hello-word.go?
Is it a web server or is it a cli tool?
This is the never ending loop of being stuck on more hello world examples and more CRUD using different frameworks that I dont intend to use.
Sometimes it is difficult to do paradigm switching, but a working playground environment will make it easy to get it going and not get stuck. I hit my own share of roadblocks trying to learn go, hopefully this list will make it easy for someone else.

Let's not get stuck and get it going :)

Terminology used across different subscription billing systems to define what a subscription is.

Udacity K8s course notes

https://classroom.udacity.com/courses/ud615/lessons/7826112332/concepts/81473137730923

Download Go:

Note: Cloud Shell comes with an installed Go, but it's not the most recent version, so you should perform the steps below to install the latest Go and set GOPATH.

wget https://storage.googleapis.com/golang/go1.6.2.linux-amd64.tar.gz
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf go1.6.2.linux-amd64.tar.gz
echo "export GOPATH=~/go" &gt;&gt; ~/.bashrc

Remove all local branches except master and release.

https://www.computerhope.com/unix/ugrep.htm

git branch | grep -v "master\|release" | xargs git branch -D

	FROM alpine
	RUN apk update && apk upgrade
	RUN apk add nodejs

	WORKDIR /app
	ADD . /app
	ENTRYPOINT [ "node", "server.js" ]

	/**
	* From https://github.com/spotify/web-api-auth-examples/blob/master/authorization_code/app.js#L25-L33
	* Generates a random string containing numbers and letters
	* @param {number} length The length of the string
	* @return {string} The generated string
	*/
	var generateRandomString = function(length) {
	var text = '';
	var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

	# https://hub.docker.com/_/alpine/
	docker pull alpine
	# bind the volume to your container
	docker run -v "$(pwd)/micro-service":/micro-service -it alpine

	// COUNT=3 INPUT=large_file.jsonl node jsonl-to-multiple-json-files.js
	const fs = require('fs');
	const readline = require('readline');
	const COUNT = parseInt(process.env.COUNT); // Numer of lines to get from the large file
	const input = fs.createReadStream(process.env.INPUT.toString()); // input .jsonl file
	const rl = readline.createInterface({ input });

	let counter = 0;

	rl.on('line', (line) => {

	# https://kubernetes.io/docs/reference/kubectl/cheatsheet/#zsh
	source <(kubectl completion zsh) # setup autocomplete in zsh into the current shell
	echo "if [ $commands[kubectl] ]; then source <(kubectl completion zsh); fi" >> ~/.zshrc # add autocomplete permanently to your zsh shell