angellee177.hashnode.devDocker Deep Dive: Architecture, Images, Containers, and ComposeWhat is Docker? Docker is an open-source platform that help developers to manages, create and orchestrate all dependencies into a strandardized, isolated unit called container. Docker History In the past, companies needed to buy an expensive, dedicat...Oct 30, 2025·13 min read
angellee177.hashnode.devLinux Core Concepts: Kernel, Commands, and Job ManagementPersonal notes As usual, this article was born because I took the “Introduction to Linux (LFS101)” course from the Linux Foundation. At first, I took this course because I have an upcoming technical interview for a Cloud Development Engineer position...Oct 24, 2025·18 min read
angellee177.hashnode.devFrom Boolean Arithmetic to Arithmetic Logic Unit (ALU)I. The Binary Foundation What is Binary number are? We often hear "Binary number" in the context of Computer Science. A binary number is the Base 2 numeral system , which means the system only uses the digits 0 and 1. At its core, computer hardware...Oct 9, 2025·26 min read
angellee177.hashnode.devBoolean Logic and the Universal Power of the NAND GateThe Foundation of Digital Systems Every piece of data you interact with—from a streaming video to a simple text message—is built on nothing more than 1s and 0s. This is the language of binary numbers. But if our digital world is just a flood of 1s an...Sep 30, 2025·16 min read
angellee177.hashnode.devWhat is API exactly? Things I wish I had known earlier.Have you ever wondered what an API really is? Why do people often mention APIs in software development, especially for backend engineers? API stands for application programming interface. The next question is, what does "Application" mean in API, and...Aug 18, 2025·7 min read
