A solution that uses one single endpoint fits all Query requests Before we dive into GraphQL, it is important to understand what is API. API Application Programming Interface (API) — a connection that allows applications to talk to each other, enabling applications to exchange data and functionality easily and securely Your…

Recursion is a function that defined itself by implementing repeated execution of statements, where a method invokes itself until the condition meets its baseline and recursion stops, like factorial calculation. When designing Recursive Algorithms, you need to have two components: base case and recursion. The base case is where the…

Redux is a library for state management, it controls in a single object — store; no matter how deep you are, no need for lifting the state up. What is Redux? redux creates a store, like a database, so sub-components can directly access values through the store instead of relying on parents(grandparents), whereas…

It has been almost two years since I started working in tech, and I have no regrets about the career moves I made. Over the past weekend, I gathered some of the studying notes that I took in the past, and posted them on Medium. Hoped these notes would be…

Share the cheatsheet I have created for the course I took back in May 2021 BU MET CS669 — Database Design and Implementation for Business in SQL. It has not only helped me with passing the course with a letter grade A but also when I need to work on SQL databases at work.

Share some coding notes I took in the past which helped me understand the concepts, and these are questions you may be asked during interviews. React What is React? A User Interface Library (for building user interfaces) Component Architecture (different functions control different parts of UI) Data Flow in React (top to bottom one-way…

Share some coding notes I took in the past which helped me understand the concepts, and these are questions you may be asked during interviews. JavaScript Behind the Scene JavaScript Mechanism (how to handle the sync and async code) The event loops behind the browser handle the sync and async JavaScript code, like when the JS engine that is built in the browser (for…

Share some coding notes I took in the past which helped me understand the concepts, and these are questions you may be asked during interviews. HTML What does a DOCTYPE do? when we have a doctype, it is “information” to the browser about what document type to expect. not case-sensitive. href & target in <a> tag. _blank (new tab) and _self (current…

A computer is an electromechanical device that takes input does processing and produces output. Inside of a Computer Tertiary Storage — added in, like CD, DVD, offline storage system Power supply — 12 volts or 5 volts Video Card/GPU — connects to the screen, stores information to display on the screen Mainboard/Motherboard — physical…