Van Dang

I'm a coder. Recently prefixed with vibe.

I look for art inside the science. It took a long while — with ups and downs hard enough to leave me seeing differently — before I started looking anywhere else. Less tech fantasy now; more about impact, taste, people, and health.

  1. Technical Business Analyst & Software Engineer

    DXC Technology · Insurance Platform · SaaS Insurance Platform.

  2. Dijkstra's algorithm

    Dijkstra's algorithm: Prerequisites: All edges are weighted positively (as paths between vertices are assumed to be increasing, leading to a greedy step

  3. Technical Leader / Data Platform Engineer

    PrimeData · Customer Data Platform · Customer Data Platform startup serving enterprise clients.

  4. Software Engineer to Lifestyle (part 1)

    Being a software engineer also helps a lot in how I organize and clean my room.

  5. Two Phases Locking - 2PL

    Two phases locking (2PL) the transactions handles its locking in 2 phases: The expanding phase: No lock can be released The shrinking phase: No lock can be

  6. Snapshot Isolation

    A transaction executing under Snapshot Isolation appears to operate on a personal snapshot of the database, taken at the start of the transaction. When the

  7. ElasticSearch

    This is what I know (up to the point of writing) about Elasticsearch: It is based on Apache Lucene (obvious but still surprising). It leverages the Log

  8. Macbook Speakers being dominant

    One of the reasons why Macbook's speaker sounds really good lies in the Driver Implementation, letting it boosts the volume high than the safe threshold when

  9. Difference between B-Tree and B+-Tree

    The main difference between B+-Tree and B-Tree is that, for B+-Tree, all pointers to actually records must be in the leaf nodes. The non-leaf nodes, though

  10. Database Physical Rearrangement In Background

    There is a background process runs in Databases to reclaim redundant space in tables, including removing dead tuples from deletions and updates. This process

  11. Concurrency Control

    Databases have long tried to hide concurrency issues from application developers by providing Transaction Isolation. In theory, isolation should make your life

  12. iVim - Vim for iPad

    iVim is vim for iPad and is actually really good, as it (and its plugins, most of them) has already been compiled when installing (even plugins that are

  13. Text Font encoding for Portability

    Fonts can be encoded entirely into base64 and bundled into .css files for portable usages. ^ab4b9f

  14. Programming Performance and Code Cleanliness

    There are trade offs between program performance and code cleanliness: clean code, which allows for better maintainability, usually introduces more

  15. Schema Migration Compatibility

    At server side, the deployment and schema migration might conflict to each other as: Application might have its components scaled. However, schema migration

  16. ARM vs X86

    To simplify the life of programmers, the CPU has a set of predefined actions and calculations called the instruction set or ISA (instruction set architecture).

  17. Doris Stream Load

    A client (such as a web service, application, or custom ETL pipeline) sends an HTTP POST request to Doris's Stream Load API endpoint. The request contains the

  18. Software Engineer

    Endash/Cigro · Data Platform · SaaS analytics product — dashboards and monitoring for online sellers.

  19. Personal Home Server

    A Personal Home Server that offers several Infrastructure and Cloud Services running in Kubernetes. Designed as a Developer Platform with real subscribed users

  20. Pjhoon

    A personal Data Platform — integrations, analytics engine, and data visualization

  21. Software Engineer

    HCLTech/ANZx · Developer Platform / Cloud Networking · In-house developer platform for ANZ Bank's digital banking unit on GCP.

  22. Archiving PJHoon - Data Platform

    Initially I built PJHoon with 2 goals: consolidate my technical knowledge, and create a, part of, so-called "legacy". This project is the most passionate one

  23. ChorusKube

    Kubernetes-native orchestration for AI agents — DAG-based secured AI workflows and human-in-the-loop review

  24. ArchCanvas

    Visual architecture tool for AI era — design systems on an interactive canvas, AI turns your diagrams into working code

  25. Being Too Generous

    Generosity seems a good thing, but sometimes it ruins relationships.

  26. GCP Associate Cloud Engineer

    It might be ridiculous to brag about this, and yes it is.

  27. Coding with AI

    It is undeniable that I code much less now. AI has done most of the "painful" work in Software Development, coding and fathering informations, arguably much

  28. Interview for a Senior position

    I failed many technical interviews, but one of them hit hard, I guess because the full feedback was available to me. Part of the reasons was also because it

  29. Tonal Quality

    Humans have biases based on how they perceive things.

  30. PJHoon - Craftmanship

    I recently brought PJHoon back as part of my portfolio showcase (I'd applied for a Data Engineering role but forgot to include it, LOL).

  31. A bit slower

    Since I subscribed to Claude Max (about half a year ago, I think), I have been much more productive. Some might laugh and say AI just gives you a false sense