Kevinbkdev Blog

Who am I…?

Building Flexible Business Rules in Golang

What’s going on with Blockchain in 2026?"

This week, I was hacked and lost a total of $2,500 worth of tokens from 2 Metamask accounts from the same seed wallet. The stolen assets included over 0.5 ETH and several altcoins across Ethereum, Base, and Arbitrum networks.

Crypto was once seen as a frontier of freedom — a place where anyone could build and innovate without permission. But by 2025, that spirit has changed.

An overview, sharing some brief insights and personal thoughts on three architectural approaches.

Building Flexible Business Rules in Golang

An overview, sharing some brief insights and personal thoughts on three architectural approaches.

Hands-On MongoDB Sharding Across Multiple Servers

MongoDB Sharding: Theory, Architecture, and Data Distribution (Part 3)

I'm a Node.js developer with over three years of experience who recently made the transition to Golang for Backend development

Let's explore 12 Git commands that might just surprise you with their usefulness and efficiency.

If you're looking for a powerful and flexible search solution for your project, or a toolkit to manage logs across a system with multiple services, Elasticsearch might be exactly what you need. Elasticsearch is an open-source search and analytics engine specifically designed to process, search, and visualize large volumes of data at high speed.

In this article, we'll explore the challenges of scaling WebSocket infrastructure and the key solutions to overcome them, with the goal of building a multi-server WebSocket cluster that meets real-world requirements.

Socket is a popular library that provides powerful real-time communication capabilities using WebSocket and other transport mechanisms. In this article, we'll explore the WebSocket protocol and cover the fundamentals of the Socket.IO library.

Webhook, WebSocket, Pub/Sub, and API Polling are common approaches to real-time data exchange that developers can choose from based on their specific requirements and goals. As an engineer, it's essential to use the right tool for the right problem; otherwise, you risk overengineering a solution or applying a particular technology where it isn't necessary.

In this article, we'll explore how Merge and Rebase work, compare their advantages and disadvantages, and develop a clear understanding of their benefits and potential risks when applied to different real-world scenarios.

[JS/TS] Do I Truly Understand the Programming Languages I Use?

The Mindset Behind High Availability System Design

How I Published My First npm Package

Tutorials cấu hình MongoDB replication…

Basically config MongoDB Standalone…

Who am I…?

As the year draws to a close, I find myself feeling a gentle, bittersweet current flowing within me. The unexpected turns, the moments of joy, and all the faces that have crossed paths with mine over the past year replay in my mind, one after another, like scenes in a movie.

Matthew 7:7 "Knock, and it shall be opened unto you".

Although recognizing and cultivating happiness may seem like a small thing, it can be surprisingly difficult to recognize what makes us happy and maintain the habits that bring us joy. From my own experience, I'd like to share a few simple practices that have helped me find more joy and happiness in everyday life…

Nestled among winding mountain ridges, this Hmong ethnic minority settlement seems to have been completely forgotten by time. It is known as the Village of Eight “Nots” because it has absolutely no name, no electricity, no roads, no medical station, no clean water, no phone signal, no household registration, and no birth certificates…

Lately, people have been hearing more and more about “financial freedom,” while many young people are choosing freelancing in pursuit of a freer lifestyle…

To be honest, I could sum up my 4.5-year journey at HCMUT in four words: “From Zero to 0.” Why? Read on to the end to find out…

From the very first days of my journey at HCMUT, I was obsessed with the idea of “graduating on time.” I worked tirelessly to complete the entire curriculum within four years. And…

Thank you, 2022, for giving me another chance to breathe, to live, and to make a contribution to this world…

Some reflections from my journey through the working world…

What’s going on with Blockchain in 2026?"

This week, I was hacked and lost a total of $2,500 worth of tokens from 2 Metamask accounts from the same seed wallet. The stolen assets included over 0.5 ETH and several altcoins across Ethereum, Base, and Arbitrum networks.

I don't know how far Blockchain will develop or what it will ultimately achieve. However, based on my current perspective and understanding, I believe the road ahead will be filled with exciting opportunities and challenges worth looking forward to.

Recently, we’ve been hearing a lot about Web3.0, often described as the next revolution in the evolution of the Internet. But is the current Blockchain infrastructure truly ready for this revolution...?

Crypto was once seen as a frontier of freedom — a place where anyone could build and innovate without permission. But by 2025, that spirit has changed.

It was a crazy year filled with confusion, worry, excitement, action, failures, healing, and growth.

How to Choose a Used Laptop for Developers and IT Students