Tag: coding

Getting a Vercel PostgreSQL Database and Basic Authentication Operational

Quick links to all posts in the series and related at end of this post.

In the last post I’ve detailed getting started with setup of a basic React App using Next.js and deploying it to Vercel using their respective command line tooling. That post is Building “Adron’s Core Platform”: Starting a React App on Vercel.

Database Time – Getting a PostgreSQL Database

First, I setup the database in Vercel. Navigate to Storage.

Next I clicked on “Create” next to the Neon option.

The next prompt form will appear. I went with PostgreSQL (Neon) database, as shown, then the closest region (mine is Portland).

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Building “Adron’s Core Platform”: Starting a React App on Vercel

Quick links to all posts in the series and related at end of this post.

There have been a number of changes in my Collector’s Tune Tracker endeavor since I wrote up the first posts for the effort with: Building a Multi-Tenant Music Collector’s Database, Starting a New Project – Let’s Choose the Tech, and Software Development: Getting Started by Getting Organized. This is a continuation of that effort. I’ll go into the differences in a later post about those first posts and how I got to this point here today. But for this post specifically, and the next few, I’ll be focusing on getting a project started with React and Vercel.

I’ll write these following an approach that is based in the following:

  • Suffice to say, I’m a bit rusty with my React.
  • I’m completely unfamiliar with Vercel. In these posts that’s about to change however.

There are also a few prerequisites. I’m working through this on an M1 Mac, using iTerm, and largely Visual Studio Code. That and a whole lot of documentation. The following are some other prerequisites that would help if you want to follow along with what I’m going to build.

Prerequisites

Rolling Into Things

Right off, let’s get the project started with the ole npx. The steps I went through involve the following – I just added comments inline to describe what I did or what setting options I went with for prompts.

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Optimizing Merchandise Ordering, Tracking, and Sales with Barcode and QR Code Scanning

In today’s fast-paced retail and supply chain environments, efficiency is king. The ability to order, track, and sell merchandise without delay or error isn’t just an advantage anymore—it’s a necessity. One of the unsung heroes of this operation? The humble barcode scanner. Whether scanning traditional barcodes or QR codes, this technology has evolved into a critical tool for optimizing the entire flow of goods. From ensuring accurate stock levels to streamlining point-of-sale (POS) systems, barcode scanning is a quiet powerhouse driving modern retail and inventory management.

Here’s how barcode and QR code scanning are revolutionizing merchandise handling—and how you can integrate it into your web-based application with a Scandit demo.

Streamlined Inventory Management

Let’s start at the warehouse or backroom. Efficient ordering hinges on having a clear, real-time understanding of what’s available in stock. Each time merchandise arrives, barcode scanning at intake ensures that the product is logged accurately into the inventory system. This eliminates manual data entry errors and ensures that the stock count is current. Need to know how many units of that best-selling product you have on hand? Just a quick scan, and it’s logged into the system with perfect accuracy.

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The Great Advantage of Meritocracy: How Algorithm Interviews Keep Your Hiring Pipeline Narrow

Ah, the joys of algorithm and data structure interviews. Or as I like to call them, the “let’s weed out anyone who isn’t a robot” interviews. You see, these code challenge interviews are touted as the pinnacle of assessing a developer’s true potential. Because nothing says “I can build scalable, maintainable software” like solving a problem about reversing a linked list on a whiteboard, right?

Let me break down the astounding advantages of these interviews for you.

Narrowing Your Candidate Pool

First and foremost, if you want to reduce the number of applicants faster than a bad odor clears a room, code challenge interviews are the way to go. These challenges are a fantastic method for eliminating a huge percentage of your candidate pool. Who cares about that candidate with 10 years of solid, hands-on experience in system design and architecture? If they can’t recall the exact time complexity of bubble sort, they’re clearly not worth your time. Because everyone knows that bubble sort is essential knowledge in the real-world scenarios you’ll encounter daily. Sure, buddy.

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Calculating IP Address Ranges in Go: Learn IPv4 Range Between Addresses

Programming Problems & Solutions : “Exploring IP Address Ranges in Go”. The introduction to this series is here and includes all links to every post in the series. This is the 8th of a dozen programming challenges I’m doing to setup for an eventual blog post on AI coding. The intent is to setup these programming challenges, get a solution, find a good refactoring, and then see how the AI tooling performs going through the same thing or refactoring what is in place. If you’re interested in how AI performs, and checking out these experiments and tests, subscribe to the blog to have the articles delivered directly to your email!

Hey there, fellow code adventurers! Today, we’re diving into the world of IP addresses and ranges. We’ve got an exciting coding challenge on our hands, and we’ll be tackling it using the Go programming language. So, grab your favorite beverage, and let’s get started!

The Challenge

Our mission, should we choose to accept it, is to implement a function that takes two IPv4 addresses as input and returns the number of addresses between them (including the first one, but excluding the last one). We’ll be working with valid IPv4 addresses in the form of strings, and the last address will always be greater than the first one.

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