Den

Building Boolflow (browser-based digital logic simulator, boolflow.site) and RealFeedApp (AI news digest, realfeedapp.com). I write about what breaks along the way.

Joined on Apr 1, 2026 https://www.boolflow.site

Den

Oct 16

I built my own roadmap. The first thing it found was that my SR latch didn't work.

#webdev #javascript #architecture #productivity

10 min read

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Den

Oct 12

Everyone Types "yes"

#security #ssh #git #devops

4 min read

Den

Oct 12

Your Git GUI Isn't Using Your SSH

#security #ssh #git #linux

4 min read

Den

Oct 12

ssh-keygen -N Puts Your Passphrase in ps

#security #linux #ssh #programming

4 min read

Den

Oct 8

My News Digest Got a Telegram Channel That Forgets Everything After a Week

#showdev #ai #webdev #productivity

5 min read

Den

Oct 5

My News Digest Got a Telegram Channel That Forgets Everything After a Week

#showdev #webdev #ai #productivity

4 min read

Den

Sep 13

A Good Summary Still Left Me Guessing

#showdev #ai #webdev #productivity

4 min read

Den

Sep 10

The Float Is a Liveness Probe: Four Failure Modes

#watercooler #discuss #devops

4 min read

Den

Sep 10

Language Models and Languages: Why "Multilingual" Is an Illusion of Equality

#ai #nlp #cloud #openai

7 min read

Den

Sep 9

One API, Three Clients, and the Validation Rule That Only One of Them Obeyed

#python #fastapi #architecture #validation

4 min read

Den

Sep 9

The Timestamp Bug That Only Showed Up East of Me

#python #backend #debugging #buildlog

4 min read

Den

Sep 8

I Stumbled on Anthropic's "Persona Selection Model" Paper — Here's My Take

#ai #alignment #claude #buildlog

5 min read

Den

Sep 7

What Was the Moment You Realized the Bug Wasn't Where You Thought It Was?

#discuss #debugging #buildlog #career

1 min read

Den

Sep 7

Why My React State Kept "Working" — Until Two Tabs Opened at Once

#react #javascript #webdev #debugging

3 min read

Den

Sep 6

How I Structure a FastAPI Service: Layers, DI, and Where Validation Actually Belongs

#python #fastapi #architecture #backend

4 min read

Den

Sep 4

I Found a 100GB "Bug" Hiding in My NVIDIA Driver

#nvidia #gaming #gamedev #hardware

6 min read

Den

Sep 3

Three Questions I Ask Myself Before Adding a Dependency

#python #productivity #architecture

3 min read

Den

Sep 2

The Memory Limit That Didn't Kill Anything

#linux #llm #debugging #ai

6 min read

Den

Aug 31

ValidationError Is Not a Policy

#python #json #validation #architecture

6 min read

Den

Aug 31

JSON and Data Validation in Python: From File Reading to Strict Contracts

#python #json #beginners

6 min read

Den

Aug 31

The Schema Was Valid. The Translation Was in Chinese

#ai #llm #python #programming

5 min read

Den

Aug 31

Everything worked when I looked at it. That was the bug.

#seo #webdev #javascript #debugging

8 min read

Den

Aug 26

I know what to build next. My own architecture disagrees about the order

#webdev #javascript #programming #architecture

11 min read

Den

Aug 26

I compared my logic simulator to 9 others. Here is where mine loses

#webdev #education #computerscience #productivity

9 min read

Den

Aug 25

I Rewrote the Same Prompt Three Times, Tuning Against Noise

#ai #python #testing #llm

5 min read

Den

Aug 24

Your AI Cover Art Looks Great — Until It's a Thumbnail

#showdev #ai #webdev #programming

4 min read

Den

Aug 18

I Built a Free AI Digest for Science and Tech News

#showdev #ai #webdev #productivity

3 min read

Den

Aug 18

Boolflow v4: I added a 17-article learning section to my browser-based logic simulator

#webdev #engineering #computerscience #education

5 min read

Den

Apr 15

Boolflow v3: Improving the First-Time Experience of My Browser-Based Digital Logic Simulator

#webdev #education #engineering #computerscience

4 min read

Den

Apr 7

Boolflow v2: A Major Update to My Free Browser-Based Digital Logic Simulator

#webdev #engineering #education #computerscience

4 min read

Den

Apr 1

I Built a Free Browser-Based Digital Logic Simulator for Learning Boolean Algebra

#webdev #education #engineering #computerscience

2 min read

2 Week Community Wellness Streak

1 Week Community Wellness Streak

Writing Debut

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