Riyadh Al Nur riyadhalnur

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

Abstraction Suggestions

Summary: use good/established messaging patterns like Enterprise Integration Patterns. Don't make up your own. Don't expose transport implementation details to your application.

Broker

As much as possible, I prefer to hide Rabbit's implementation details from my application. In .Net we have a Broker abstraction that can communicate through a lot of different transports (rabbit just happens to be our preferred one). The broker allows us to expose a very simple API which is basically:

publish
request
start/stop subscription

This is an example of how to scaffold API endpoints to list / get / create / update / delete Posts in a Keystone website.

It's a modification of the default project created with the yo keystone generator (see https://github.com/JedWatson/generator-keystone)

Gists don't let you specify full paths, so in the project structure the files would be:

routes-index.js        -->    /routes/index.js         // modified to add the api endpoints
routes-api-posts.js    -->    /routes/api/posts.js     // new file containing the Post API route controllers

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

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.

To implement API authentication in KeystoneJS, you need the following:

For key based authentication

Middleware that validates the key in the request body or a header

For session based authentication

An endpoint that handles signin
An endpoint that handles signout

	echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
	. ~/.bashrc
	mkdir ~/local
	mkdir ~/node-latest-install
	cd ~/node-latest-install
	curl http://nodejs.org/dist/node-latest.tar.gz \| tar xz --strip-components=1
	./configure --prefix=~/local
	make install # ok, fine, this step probably takes more than 30 seconds...
	curl https://www.npmjs.org/install.sh \| sh

	function keepTrying(otherArgs, promise) {
	promise = promise\|\|new Promise();

	// try doing the important thing

	if(success) {
	promise.resolve(result);
	} else {
	setTimeout(function() {
	keepTrying(otherArgs, promise);

	# Change YOUR_TOKEN to your prerender token
	# Change example.com (server_name) to your website url
	# Change /path/to/your/root to the correct value

	server {
	listen 80;
	server_name example.com;

	root /path/to/your/root;
	index index.html;

	A warning occurred (42 apples)
	An error occurred