A pragmatic engineer blog, written by a human.

Scaling databases can feel like a scary topic.

Real-time is one of those features that demos in an afternoon and humbles you for a month.

I usually go out and join tech events in the city.

Back in 2015, when the Node.js, NoSQL, and microservices ecosystem was still fresh and the tooling hadn’t matured, choosing one solution over the other would be a hit-and-miss situation.

At this point, April 2026, everyone is familiar with AI integrated deeply into the software development process.

Conway's Law says systems end up mirroring the communication structure of the teams that build them.

In my previous post, I introduce the project Wakapi - an alternative to Wakatime but it totally free, it mean you have to self hosted it somewhere. https://hashnode.com/post/cm3i8c9mp001609ku3rhieuku The database Wakapi provide several choices of database.

I have been using Wakatime since 2017, but I stopped using it in recent years because the free plan, which only provides a two-week range report, is not very helpful.

A Developer's Journey I've always wanted to build a chat system, just for the joy of it.

A Simple Solution to a Tricky Problem If you've ever tried to replace a string containing special characters in Vim, especially across multiple files, you know it can be a real headache.

Introduction In this guide, we'll walk through setting up two Cloud Run services - a public frontend and a private backend - using Terraform.

Clustering Slack alerts with TF-IDF and DBSCAN Most teams have a Slack channel full of alerts that everyone eventually mutes.

A problem-solving framework is a checklist of questions that help you break down a problem and figure out how to solve it.

User story (simple) As a user, I want to set up a time delay for my actions (e.g., send email) in a certain period, a certain day of the week, or a specific day of the year.

I'm using the latest commercial AI technologies, including Copilot for business, Copilot chat, Grammarly, Notion AI, ChatGPT Plus, and maybe other AI features embedded in a product that I am not aware of.

I'm tired of JS, not to mention TS and mostly I blame the whole JS ecosystem.

I missed the feature of quickly creating a scratch when I switched back to Vim from Webstorm.

I was struggling to keep my dotfiles in GitHub in sync with the dot files in the $HOME directory.

I have scheduled myself to write a weekly blog, so I am now thinking about what I want to share this week.

It is the ability to transform the verbal, rough description into programmable tasks.