Spreading Knowledge
Jake’s Networking Nightmare Jake, now well-versed in AWS compute services, is ready to deploy his application. But there’s a problem—he doesn’t understand how AWS networking works. What’s a VPC? Why do we need Subnets? And what on earth are Security Groups? Alex, his mentor, chuckles. “Think of AWS networking like designing a shopping mall. Each … Read more
Jake’s Compute Conundrum Jake, our enthusiastic cloud learner, is building an application and needs computing power. However, AWS offers multiple options: EC2 Auto Scaling, ECS, and Lambda. Unsure which one to use, he consults his mentor, Alex. The Transportation Analogy Alex smiles. “Think of your compute needs like transportation options. Depending on your workload, you … Read more
Jake’s Database Dilemma Jake, our aspiring cloud architect, is building a new web application. He knows he needs a database but is confused by AWS’s options: RDS, DynamoDB, and Aurora. He turns to his mentor, Alex, for guidance. The Restaurant Analogy Alex smiles. “Think of databases like dining options. Depending on your needs, you choose … Read more
Meet Jake, the Cloud Storage Explorer Jake, our enthusiastic cloud learner, is setting up an AWS project. He knows he needs to store data but is overwhelmed by three options: S3, EFS, and FSx. Unsure of which to choose, he turns to his mentor, Alex, for guidance. The Storage Garage Analogy Alex smiles. “Think of … Read more
Persistent vs. Ephemeral: Choosing the Right Storage in AWS Meet Jake, the Curious Cloud Enthusiast Jake, our eager high school student, has been diving deeper into AWS. Today, he comes across two storage options when launching an EC2 instance: EBS (Elastic Block Store) and Instance Store. Confused, he asks his mentor, Alex, “Which one should … Read more
AWS Load Balancer Showdown: ALB vs. NLB vs. GWLB Meet Jake, the Aspiring Cloud Architect Jake is a high school student passionate about IT and cloud computing. One day, while exploring AWS, he stumbles upon something called “Load Balancers.” Curious, he asks his tech-savvy mentor, Alex, “Why do we even need load balancers, and what’s … Read more
Given an arc or segment with known width and height: The formula for the radius is: W is the length of the chord defining the base of the arcH is the height measured at the midpoint of the arc’s base. Derivation Intersecting chord theorem When two chords intersect each other inside a circle, the products of their … Read more
In Toad Or Oracle SQL*Plus, the & character is treated as the beginning of a substitution variable. This can cause unexpected behavior when your script contains & for other reasons—like inside a string literal. For example, the following SQL statement will trigger a prompt: To avoid this, you can disable substitution by running: This tells … Read more
Option: -Djava.net.preferIPv4Stack=true By default, Java prefers IPv6 if it’s available. However, in some environments, IPv6 can cause connectivity issues. This JVM option tells Java to use IPv4 instead. 
How to use 
When to use it
https://google.github.io/styleguide/javaguide.html 1 Introduction This document serves as the complete definition of Google’s coding standards for source code in the Java™ Programming Language. A Java source file is described as being in Google Style if and only if it adheres to the rules herein. Like other programming style guides, the issues covered span not only aesthetic issues of formatting, but other types … Read more