Hi, I'm Phúc

I'm just a regular developer and I love to share my notes about my knowledge and my experiences I gain from programming. Please don't judge me if I wrote anything dumb, but you can contact me if you want to give me feedback or discussions.

Read the blog posts or check README for more info.

Featured

• Classification and Softmax Regression

  2 Nov, 2026

  A simple, visual guide to Classification, One-Hot Encoding, the Softmax Function, Cross-Entropy Loss, and its clean gradient derivation.

• Generalization and Model Selection

  2 Nov, 2026

  A simple guide to generalization, model complexity, the 3-way data split, and K-Fold cross-validation in Machine Learning.

• Linear Regression from Scratch with PyTorch

  2 Nov, 2026

  A comprehensive guide to Linear Regression from scratch with PyTorch — data handling (Z-score normalization, One-Hot Encoding, Log Transformation), Forward Pass, MSE Loss, Mini-batch SGD, and Modular OOP Design.

• Backpropagation Calculus

  3 Oct, 2026

  A comprehensive mathematical guide to Backpropagation Calculus — understanding chain rule, partial derivatives, and gradient flow in Neural Networks.

• What is a Neural Network?

  2 Oct, 2026

  A friendly guide to understanding the concepts of Neural Networks, part of the AI series for learning from scratch.

• Getting Started with PlatformIO & ESP32

  16 Sep, 2026

  Say goodbye to messy vendor IDEs! A simple, developer-friendly guide to setting up PlatformIO in Neovim and coding your first ESP32 project.

• Overview of Physical Works in IoT

  12 Sep, 2026

  A friendly guide to understanding the physical works in Internet of Things (IoT), completely series of IoT for learning from scratch.

• Connect your device to the Internet

  4 Sep, 2026

  A friendly guide to connecting your IoT device to the Internet, completely series of IoT for learning from scratch.

• Deeper Dive into Internet of Things (IoT)

  2 Sep, 2026

  A friendly guide to understanding the deeper concepts of Internet of Things (IoT), completely series of IoT for learning from scratch.

• Sensors and Actuators in Internet of Things (IoT)

  2 Sep, 2026

  A comprehensive guide to understanding sensors and actuators in Internet of Things (IoT), their types, applications, and how they work together in IoT systems.

• Process Synchronization in Operating Systems: A Developer-Friendly Guide

  24 Aug, 2026

  A comprehensive, developer-friendly guide to understanding process concurrency in operating systems, including inter-process communication, synchronization mechanisms, and practical examples.

• Transaction Concurrency Control in Database Systems

  24 Aug, 2026

  A comprehensive, developer-friendly guide to understanding transaction concurrency control in database systems, its importance, and the various techniques used to manage concurrent transactions effectively.

• Domain-Driven Design (DDD)

  16 Jul, 2026

  A comprehensive, developer-friendly guide to Domain-Driven Design (DDD) principles, architecture, and best practices for building complex software systems.

• Firebase Cloud Messaging (FCM)

  16 Jul, 2026

  A comprehensive, developer-friendly guide to Firebase Cloud Messaging (FCM) architecture, server setup, and code implementations.

• Introduction to Internet of Things (IoT)

  16 Jul, 2026

  A comprehensive, developer-friendly guide to understanding the Internet of Things (IoT), its applications, and how to get started with IoT development.

• Hangfire Background Job

  16 Jul, 2026

  A background job processing framework for .NET applications that allows you to run tasks asynchronously, schedule recurring jobs, and manage job execution with a user-friendly dashboard. Includes a complete PostgreSQL integration guide.

• Understanding Message Brokers

  16 Jul, 2026

  A simple, developer-friendly guide to message brokers, how they act as buffers to prevent server crashes, and how to choose the right one.

• Optimistic vs Pessimistic Concurrency Control

  16 Jul, 2026

  A comprehensive, developer-friendly guide to understanding the differences between optimistic and pessimistic concurrency control in database systems, including their use cases, advantages, and disadvantages.

• Web Push Notification

  16 Jul, 2026

  A comprehensive, developer-friendly guide to web push notifications, how they work, and how to implement them using Firebase Cloud Messaging (FCM).

• Entity-Attribute-Value (EAV) in Database Design Pattern

  Updated:17 May, 2026

  These blogs is my diary of learning :)) feel free to read or feed back to me.