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Jan’s blog

Personal blog · jnidzwetzki.github.iodataprogrammingsystems

Jan’s blog is a personal blog at jnidzwetzki.github.io about data, programming and systems. Since 2025, 5 different Hacker News readers have linked it 6 times, most often “The Art of SQL Query Optimization”. It is still writing: the last post was on 2026-05-08, and you can follow it by feed.

Visit the blog
6mentions?
5HN people?
2025–2026first – last linked?
Links on Hacker News per year · peak 4 in 2025

Software architecture, databases, and distributed systems

Most-linked posts?

  1. The Art of SQL Query Optimization
    3 people · 3 mentions · first linked 2025-06-04

What Hacker News says?

  1. thunderbong · 2025-06-05

    Submitted The Art of SQL Query Optimization as a story · 14 points

    HN discussion
  2. tanelpoder · 2025-06-04

    Submitted Exploring Postgres SQL plan execution "expected" vs. "actual" metrics visually as a story · 3 points

    HN discussion
  3. nikolay_sivko · 2026-05-11

    Submitted Tracing PostgreSQL Using eBPF and Hardware Breakpoints as a story · 2 points

    HN discussion
  4. tanelpoder · 2026-04-01

    Submitted pg_plan_alternatives: Tracing PostgreSQL Query Plan Alternatives Using eBPF as a story · 2 points

    HN discussion
  5. gwen-shapira · 2025-06-04

    Submitted The Art of SQL Query Optimization as a story · 2 points

    HN discussion
  6. woolenandroid · 2025-05-19

    Submitted Building a Query Plan Explorer Using GitHub Copilot as a story · 2 points

    HN discussion

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