Paul Rule prule

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.

	Author	Quote
	Thomas Edison	Genius is one percent inspiration and ninety-nine percent perspiration.
	Yogi Berra	You can observe a lot just by watching.
	Abraham Lincoln	A house divided against itself cannot stand.
	Johann Wolfgang von Goethe	Difficulties increase the nearer we get to the goal.
	Byron Pulsifer	Fate is in your hands and no one elses
	Lao Tzu	Be the chief but never the lord.
	Carl Sandburg	Nothing happens unless first we dream.
	Aristotle	Well begun is half done.
	Yogi Berra	Life is a learning experience, only if you learn.

Stop using JWTs!

TLDR: JWTs should not be used for keeping your user logged in. They are not designed for this purpose, they are not secure, and there is a much better tool which is designed for it: regular cookie sessions.

If you've got a bit of time to watch a presentation on it, I highly recommend this talk: https://www.youtube.com/watch?v=pYeekwv3vC4 (Note that other topics are largely skimmed over, such as CSRF protection. You should learn about other topics from other sources. Also note that "valid" usecases for JWTs at the end of the video can also be easily handled by other, better, and more secure tools. Specifically, PASETO.)

A related topic: Don't use localStorage (or sessionStorage) for authentication credentials, including JWT tokens: https://www.rdegges.com/2018/please-stop-using-local-storage/

The reason to avoid JWTs comes down to a couple different points:

The JWT specification is specifically designed only for very short-live tokens (~5 minute or less). Sessions

Workflow Orchestration

1. Plan Node Default

Enter plan mode for ANY non-trivial task (3+ steps or architectural decisions)
If something goes sideways, STOP and re-plan immediately - don't keep pushing
Use plan mode for verification steps, not just building
Write detailed specs upfront to reduce ambiguity

2. Subagent Strategy

Use subagents liberally to keep main context window clean

Global Claude Code Instructions

Preferred Tools & Auto-Install via Homebrew

Before falling back to Python scripts or sed for file manipulation, check for and prefer these tools. If a preferred tool is not installed, suggest installing it via Homebrew before proceeding with an inferior alternative.

File Editing

Edit tool — always first choice for single precise edits

	import javafx.application.Application;
	import javafx.scene.*;
	import javafx.scene.control.*;
	import javafx.scene.control.cell.PropertyValueFactory;
	import javafx.stage.Stage;
	import javafx.util.Callback;

	// demonstrates highlighting rows in a tableview based upon the data values in the rows.
	public class DebtCollectionTable extends Application {
	public static void main(String[] args) throws Exception { launch(args); }