jidonglab

1 project a week. Building and sharing the entire process — from idea to shipped product in 7 days. Currently: AI news automation.

korea Joined on Feb 25, 2026 [email protected] https://jidonglab.com/

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jidonglab

Mar 19

Claude Code Agent Teams Can Spawn Agents. It Just Doesn't Know Which Ones to Use.

#ai #claude #productivity #opensource

4 min read

jidonglab

Mar 6

What 100 Trending GitHub Projects Tell Us About Where AI Is Actually Going

#ai #opensource #productivity #webdev

4 min read

jidonglab

Mar 3

Anthropic Dropped 13 Free Courses — I Broke Down Every Single One

#ai #productivity #claude #beginners

3 min read

jidonglab

Nov 15

Nginx proxy_buffering Ate My LLM Stream: 0.4s First Token Became 6.1s

#ai #devops #python #tutorial

7 min read

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jidonglab

Nov 14

temperature=0 Isn't Deterministic: 17 of 5,000 Greedy Tokens Flipped

#llm #machinelearning #performance #python

7 min read

jidonglab

Nov 14

docker stop Takes 10 Seconds: 5 of My 6 Containers Ignored SIGTERM

#devops #tooling #tutorial #cli

6 min read

jidonglab

Nov 13

asyncio.gather Kept Running: 1,761 LLM Calls Finished After My 500

#python #ai #llm #performance

7 min read

jidonglab

Nov 12

Refmade 0.4 Is Out: A Free Mac and Windows App in Eight Languages

#showdev #macos #electron #ai

7 min read

jidonglab

Nov 12

Claude Prompt Caching Minimum: 1,240 Haiku 4.5 Calls, 0 Cache Hits

#claude #ai #python #performance

6 min read

jidonglab

Nov 12

KV Cache Math: Llama 3.1 8B Needs 16 GiB Just to Hold 128K Tokens

#llm #machinelearning #performance #python

6 min read

jidonglab

Nov 11

GitHub Actions fetch-depth: 1 Turned 9 Releases Into 0.1.dev1

#devops #tooling #tutorial

6 min read

jidonglab

Nov 11

SQLite 'database is locked' in 2ms: Why busy_timeout Didn't Help

#python #ai #automation #performance

6 min read

jidonglab

Nov 10

vLLM Prefix Caching: One Timestamp Dropped My Hit Rate From 89% to 3%

#llm #performance #python #machinelearning

7 min read

jidonglab

Nov 10

GitHub Actions Cache Hit, Never Saved: 312 Runs on a 47-Day-Old Cache

#devops #tooling #productivity #tutorial

7 min read

jidonglab

Nov 9

Eight Languages in One Day: Localizing a Korean-Only App

#i18n #electron #ai #testing

6 min read

jidonglab

Nov 9

Whisper Hallucinates on Silence: 61 of 700 Pauses Became 'Thank You'

#ai #python #machinelearning

6 min read

jidonglab

Nov 9

Claude API max_tokens Cut Off 143 of 1,600 Summaries Mid-Sentence

#claude #ai #python #automation

6 min read

jidonglab

Nov 8

all-MiniLM-L6-v2 Silently Truncates at 256 Tokens: 38% of My Chunks

#llm #machinelearning #python #ai

6 min read

jidonglab

Nov 7

Docker Compose depends_on Didn't Wait: 11 of 40 Fresh Starts Crashed

#devops #tooling #tutorial #productivity

6 min read

jidonglab

Nov 7

5 Releases in One Day: Release Gates for a Solo App

#testing #electron #ai #webdev

6 min read

jidonglab

Nov 7

Claude Code PreToolUse Hook: 80 of 91 Secret Blocks Were False Alarms

#claudecode #claude #tooling #cli

6 min read

jidonglab

Nov 6

Claude Code on zsh: 7,795 Commands Broke, 5,559 Still Exited 0

#claudecode #ai #cli #productivity

6 min read

jidonglab

Nov 6

LangChain chunk_overlap=200: 2,181 of 4,155 Chunks Got No Overlap

#llm #python #ai #machinelearning

6 min read

jidonglab

Nov 5

Refmade Shipped Without Git: 2,764 Files in One Snapshot

#git #ai #webdev #buildinpublic

5 min read

jidonglab

Nov 5

Claude Code Env Vars Don't Persist: 3 of 80 Runs Fell Back to Prod

#claudecode #ai #productivity #cli

6 min read

jidonglab

Nov 4

Claude Code Token Usage: 97% of 44.6B Tokens Were Cache Re-Reads

#claudecode #ai #productivity #python

6 min read

jidonglab

Nov 4

RoPE in bfloat16: 8,192 Token Positions Collapsed Into 897

#llm #machinelearning #python #performance

6 min read

jidonglab

Nov 3

Shipping a Mac Electron App Without Apple Notarization

#electron #macos #buildinpublic #claudecode

5 min read

jidonglab

Nov 3

json.dumps Writes NaN by Default: 31 LLM Reports JSON.parse Rejected

#python #llm #ai

6 min read

jidonglab

Nov 3

asyncpg + PgBouncer Transaction Mode: 61 Prepared Statement Errors

#python #performance #devops #tutorial

6 min read

jidonglab

Nov 2

GitHub Actions GITHUB_TOKEN Doesn't Trigger Workflows: 11 Tags, 0 Runs

#devops #tooling #tutorial

6 min read

jidonglab

Nov 2

Python requests timeout=60 Let My LLM Stream Run for 38 Minutes

#python #llm #performance #ai

7 min read

jidonglab

Nov 1

My Claude Code Sign-in Fix Needed Two Fixes of Its Own

#claudecode #electron #security #ai

5 min read

jidonglab

Nov 1

LLM-as-Judge Position Bias: Swapping A/B Flipped 87 of 300 Verdicts

#llm #machinelearning #ai #python

7 min read

jidonglab

Nov 1

git push --force-with-lease Is Unsafe If Your Editor Auto-Fetches

#tooling #cli #devops #productivity

6 min read

jidonglab

Oct 31

Python ThreadPoolExecutor Swallowed 212 Claude API Errors Silently

#python #ai #automation

6 min read

jidonglab

Oct 31

AWS ALB Idle Timeout Killed 14% of My Voice WebSockets at 60s

#devops #ai #tutorial

6 min read

jidonglab

Oct 30

Measuring What My Electron App Sends: 94 Sockets, 0 Out

#privacy #networking #electron #macos

5 min read

jidonglab

Oct 30

vLLM Speculative Decoding: 1.8x Faster Alone, Slower at 32 Users

#llm #performance #machinelearning #python

7 min read

jidonglab

Oct 30

Claude Code Deny Rules Block Read(.env) But Not cat .env

#claudecode #claude #tooling #cli

6 min read

jidonglab

Oct 29

pgvector HNSW Filtering Returned 0 Rows for 52 of My 400 Queries

#ai #llm #performance #python

6 min read

jidonglab

Oct 29

frequency_penalty Broke My JSON: 47 of 88 Long Invoices Lost Items

#llm #machinelearning #python #ai

7 min read

jidonglab

Oct 28

Wrapping Claude Code and Codex in Electron: A Stop Bug

#electron #claudecode #ai #node

6 min read

jidonglab

Oct 28

Docker Bypasses UFW: 3 Ports I Denied Were Open to the Internet

#devops #tooling #cli #tutorial

6 min read

jidonglab

Oct 27

Silero VAD Endpointing Cut Off 23% of Answers: 700ms Isn't a Turn

#ai #python #llm #performance

6 min read

jidonglab

Oct 27

nginx proxy_buffering Broke My Claude SSE Stream: 0.7s to 3.4s TTFT

#ai #performance #python #llm

7 min read

jidonglab

Oct 26

BPE Tokenization: A Trailing Space in My Prompt Broke 41 of 300 Labels

#llm #machinelearning #python #ai

6 min read

jidonglab

Oct 26

13 Research Agents Told Me My Feature Was Already Free

#ai #claudecode #startup #productivity

5 min read

jidonglab

Oct 26

GitHub Actions paths Filter + Required Checks: 23 PRs Stuck Pending

#devops #tutorial #productivity #tooling

6 min read

jidonglab

Oct 25

Celery visibility_timeout Ran My Claude Jobs 3.3x: 1,800 Became 5,913

#python #ai #automation

7 min read

jidonglab

Oct 25

JSON Schema Field Order: My vLLM Classifier Answered Before Thinking

#llm #machinelearning #python #ai

6 min read

jidonglab

Oct 24

Claude Prompt Caching Hit 0 of 1,412 Calls: A Timestamp Killed It

#claude #ai #python #llm

7 min read

jidonglab

Oct 24

Codex Image Gen Saved My White Pixels as Transparent

#ai #gamedev #python #codex

6 min read

jidonglab

Oct 24

GitHub Actions Cache Never Updates: 9 Weeks of a Frozen mypy Cache

#devops #tooling #productivity #tutorial

6 min read

jidonglab

Oct 23

Claude Batch API Returned Results Out of Order: 59% of My Labels Wrong

#claude #ai #python #automation

6 min read

jidonglab

Oct 23

vLLM KV Cache Math: Why My 24GB GPU Served Only 4 Requests at Once

#llm #machinelearning #performance #python

7 min read

jidonglab

Oct 22

Docker RUN rm Didn't Delete My .env. 3 of 14 Images Still Had It

#devops #tooling #tutorial

6 min read

jidonglab

Oct 22

I Shipped a Friends Feature, Then Dropped It the Same Day

#ai #privacy #postgres #webdev

5 min read

jidonglab

Oct 22

SQLite 'database is locked' Ignored My 30s busy_timeout: 311 Failures

#python #ai #automation

6 min read

jidonglab

Oct 21

Claude stop_reason max_tokens: 83 Reports Silently Cut Off Mid-JSON

#claude #ai #python #llm

6 min read

jidonglab

Oct 20

Five Parallel AI Builders, One Contract, 25 Review Fixes

#ai #claudecode #node #webdev

6 min read

jidonglab

Oct 20

Refmade: a free desktop app for Claude Code and Codex, without the terminal

#showdev #claudecode #ai #productivity

3 min read

jidonglab

Oct 19

BM25 vs Embeddings: Why My Vector Search Couldn't Find Error E4012

#llm #machinelearning #ai #python

7 min read

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1 Week Community Wellness Streak

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