A New Tool Hello again. I’ve had a chance to experiment with a new tool on a beginner project. The tool is a 3D printer, which is not mine, but belongs to my brother and nephews. It appeared over Christmas 2021. I have been impressed with what they have been able to…

Quick Sort The Quick Sort algorithm uses a Divide and Conquer strategy for sorting an array of items. Divide and Conquer is a technique that can be divided into the following three parts: Divide the problem into two or more sub-problems of the same or related type Conquer the sub-problems…

Part 3: PostGIS, AWS, React and Mapbox In this post we will complete the circle back to the Geographic Daydream post from a few weeks back. In that post, we were focused on finding the best location for a brand new state of the art Animal Hospital. We used…

Part 2: Serverless, AWS API Gateway, Lambda and Mapbox Quick Recap In part 1, we completed the back end for an AWS microservice, comprised of a PostGreSQL relational database with the PostGIS geospatial extension enabled. …

Part 1: The PostgreSQL, PostGIS and AWS Cloud back end The idea of Microservices Traditional monolithic web applications are hard to scale. As the code base ages and becomes more complex, adding new features or new technologies becomes increasingly difficult. Within a microservices architecture, each application component runs as its own service and communicates…

Bubble Sort — Bubble sorting is based on the idea of repeatedly comparing pairs of adjacent values and then swapping their positions when the values are out of order. It is an intuitive sorting method because it’s logic is based on the comparison of values, one at a time. …

How hackers can peer into insecure web connected databases A Persistent Problem SQL injection attacks are not new. They have been around since when websites first became connected to databases. Misbehaving hackers figured out that they could sometimes manipulate a website’s URL and access data that was not intended for them. Or, if…

Let’s imagine a new reality. POOF! At the wave of Alex’s hand, we magically discover that we now inhabit the body of a completely new person… …one that has just graduated from the College of Veterinary Medicine at Purdue University, in the state of Indiana of all things. Amazing!

Using Big O Analysis to write efficient code What is Big O Analysis? A programmer’s main task is to write code that executes series of actions designed to produce some desired output. As every new chunk of code is written, the programmer likely must evaluate different ways to solve a particular problem through code. So…