Goal: expose two hostnames via Cloudflare Tunnel that route to services running on a single EC2 instance:
<SUBDOMAIN 1>.<YOUR DOMAIN NAME>.com → http://localhost:80 (Python website)<SUBDOMAIN 2>.<YOUR DOMAIN NAME>.com → http://localhost:3000 (Express API)This guide is concise and written for Amazon Linux (YUM/RPM). Commands assume you run them as ec2-user with sudo where necessary.
AWS lets you issue a real ACM certificate for the exact string *.compute-1.amazonaws.com and for your specific instance DNS name. It’s public and trusted by all browsers.
Open ACM in us-east-1 (N. Virginia) — this is mandatory
https://us-east-1.console.aws.amazon.com/acm/home
Request a public certificate → click “Request”
Complete beginners who know what a browser and a text editor are.
2 hours (guided, hands-on).
By the end of this lesson, the student will have built a simple responsive image gallery laid out with CSS Grid and a tiny bit of JavaScript to open an image in a lightbox/modal.
Using all of these md files Lets build out a really comprehensive PRD markdown file that holds all of the data in depth of this project, make sure to include executive summary and technical summary and diagrams and elaborate on the data where relevant
Project: Bander Snatch
Duration: ~7-8 minutes
Hello and welcome to the Labs DS Setup tutorial. I'm going to walk you through the process of pulling the Labs DS project locally and getting everything configured for Unit 1, Sprint 2. By the end of this video, you'll have a fully functional development environment ready to start coding.
This document explains the romanToInt function, which converts a Roman numeral string to its integer equivalent. The function is implemented in JavaScript and handles standard Roman numeral rules, including subtractive cases (e.g., IV = 4). Below, we provide a Mermaid flowchart to visualize the algorithm's flow and a step-by-step example for the input "XIV".
The romanToInt function takes a string s of Roman numerals and returns the corresponding integer. It uses a dictionary to map Roman symbols to their values and processes the string from left to right, handling subtractive cases by checking if the next symbol has a greater value.
This document illustrates the execution of three solutions for the "Roman to Integer" problem (LeetCode 13) using the valid Roman numeral string "MCMXCIV" (1994). The solutions are:
Each solution is visualized with a Mermaid sequence diagram showing the step-by-step processing of "MCMXCIV". A flowchart for the Final Solution’s logic is also included, with notes on how it differs for the other solutions.
A for loop in JavaScript is a way to repeat a block of code a specific number of times or until a condition is met. It’s commonly used when you know how many times you want to run the loop or need to iterate over a sequence, like numbers, elements in an array, or characters in a string. This guide breaks down the for loop into its simplest parts, focusing on the syntax like (let i = 0; i < someValue; i++), with examples to make it clear for beginners.
A for loop runs a block of code repeatedly based on a condition. It’s structured to initialize a counter, check a condition, and update the counter after each iteration. Here’s the basic syntax:
for (initialization; condition; update) {
// Code to execute in each iteration