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

Oct 25

JSON Schema Field Order: My vLLM Classifier Answered Before Thinking

#llm #machinelearning #python #ai

6 min read

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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

jidonglab

Oct 19

Why docker stop Takes 10 Seconds: PID 1 Is Ignoring Your SIGTERM

#devops #tooling #tutorial #cli

6 min read

jidonglab

Oct 18

Claude Code Hooks: Exit Code 1 Doesn't Block. 9 of 9 Commands Ran

#claudecode #claude #tooling #cli

6 min read

jidonglab

Oct 18

Reading Claude Code and Codex Session Logs: Four Traps

#claudecode #node #ai #debugging

6 min read

jidonglab

Oct 18

vLLM Temperature 0 Isn't Deterministic: 23 of 200 Answers Changed

#llm #machinelearning #performance #python

7 min read

jidonglab

Oct 17

Whisper Hallucinations: 'Thanks for Watching' in 9% of My Transcripts

#ai #python #machinelearning

6 min read

jidonglab

Oct 16

Stop Trusting Agent Self-Reports: Read the Logs Instead

#ai #claudecode #architecture #buildinpublic

6 min read

jidonglab

Oct 14

A Local-First Plan, Then 4 Days of Scope Creep

#ai #claudecode #postgres #productivity

6 min read

jidonglab

Oct 13

GitHub Actions fetch-depth: 1 Made My CI Skip Tests for 41 PRs

#devops #tooling #tutorial #productivity

7 min read

jidonglab

Oct 12

I Built an Agent Team, Then Couldn't See What It Did

#ai #claudecode #codex #buildinpublic

5 min read

jidonglab

Oct 12

Sync Anthropic Client Blocked My asyncio Loop: Voice p95 Hit 11.4s

#python #performance #ai #llm

7 min read

jidonglab

Oct 12

Python json.dumps ensure_ascii: 24% More Claude Tokens, Wrong Kanji

#llm #python #ai #performance

6 min read

jidonglab

Oct 11

Cosine Similarity Threshold 0.8: Embedding Anisotropy Broke My RAG

#llm #machinelearning #ai #python

7 min read

jidonglab

Oct 11

Docker Compose depends_on Won't Wait for Postgres: 11/50 Runs Failed

#devops #tutorial #tooling #productivity

6 min read

jidonglab

Oct 10

Ollama num_ctx Truncated 287 of 400 Prompts and Never Told Me

#ai #llm #python #tutorial

6 min read

jidonglab

Oct 10

bge-reranker Truncates at 512 Tokens: 31% of My Chunks Got Cut

#llm #machinelearning #ai #python

7 min read

jidonglab

Oct 9

LLM-as-a-Judge: Claude Gave 68% of Answers a 7 or 8 Out of 10

#llm #ai #machinelearning #python

6 min read

jidonglab

Oct 8

GitHub Actions GITHUB_TOKEN Won't Trigger Workflows: 0 of 11 Releases

#devops #tooling #tutorial

6 min read

jidonglab

Oct 7

tiktoken Undercounts Claude Tokens: 37 of 418 Requests Blew the Limit

#claude #llm #python #ai

7 min read

jidonglab

Oct 7

Speculative Decoding Made My vLLM Server Slower: The Acceptance Math

#llm #performance #machinelearning #ai

7 min read

jidonglab

Oct 6

Anthropic SDK max_retries Stacked on My Retries: 36 Calls per Job

#ai #claude #python #devops

6 min read

jidonglab

Oct 5

Claude Code Deny Rules Blocked Read(.env). Bash Read It Anyway

#claudecode #claude #ai #tooling

6 min read

jidonglab

Oct 4

Claude Code in launchd: My Nightly claude -p Job Worked 6 of 14 Nights

#claudecode #automation #cli #productivity

6 min read

jidonglab

Oct 4

pgvector HNSW Filtering: My RAG Asked for 10 Rows and Got 0

#ai #llm #performance #machinelearning

6 min read

jidonglab

Oct 3

Nginx proxy_buffering Broke My LLM SSE Stream: 0.4s Became 3.4s

#devops #ai #python #performance

6 min read

jidonglab

Oct 2

GitHub Actions Cron Was Late 30 Nights Straight, Then Skipped One

#devops #tooling #tutorial #productivity

7 min read

jidonglab

Oct 2

Claude Parallel Tool Use: My Agent Loop Crashed on 388 of 1,200 Runs

#claude #ai #agents #python

7 min read

jidonglab

Sep 30

Lost in the Middle: My RAG Found the Right Chunk and the LLM Ignored It

#llm #ai #machinelearning #python

7 min read

jidonglab

Sep 29

Claude Prompt Caching Hit Rate Was 0%. One Timestamp Did It

#claude #llm #python #ai

7 min read

jidonglab

Sep 28

GitHub Actions Cache Never Saves on a Key Hit: 23 Days of Stale CI

#devops #tooling #tutorial #productivity

6 min read

jidonglab

Sep 28

MCP stdio Server: One print() Broke 19% of My Tool Calls

#ai #python #claudecode #tooling

6 min read

jidonglab

Sep 27

KV Cache Math: Why Llama 3.1 8B at 128K Context Won't Fit in 24GB

#llm #machinelearning #performance #python

6 min read

jidonglab

Sep 26

git push --force-with-lease Stops Protecting You After git fetch

#devops #productivity #tooling #cli

6 min read

jidonglab

Sep 26

Deepgram endpointing=300 Cut Off 22% of My Voice AI Users Mid-Answer

#ai #python #automation #tutorial

6 min read

jidonglab

Sep 25

Claude stop_reason max_tokens: json_repair Hid 198 Truncated Replies

#claude #ai #python #llm

6 min read

jidonglab

Sep 25

BM25 vs Embeddings: Why Your RAG Can't Find Error Code PGX-4012

#llm #machinelearning #ai #python

7 min read

jidonglab

Sep 24

Docker Stop Takes 10 Seconds: Your App Is PID 1 and Ignores SIGTERM

#devops #tutorial #tooling

7 min read

jidonglab

Sep 24

Claude Code Subagents Were 48% of My Bill. Their Output Was 0.9%

#claudecode #claude #ai #productivity

6 min read

jidonglab

Sep 23

Temperature 0 Isn't Deterministic: Batch Invariance in LLM Inference

#llm #machinelearning #ai #performance

7 min read

jidonglab

Sep 23

Whisper Hallucinates on Silence: 187 Phantom Transcripts in a Week

#ai #machinelearning #python #llm

6 min read

jidonglab

Sep 22

actions/checkout fetch-depth: Why Your CI Diff Against main Is Empty

#devops #tooling #tutorial

5 min read

jidonglab

Sep 22

Claude Code Hooks Only Block on Exit Code 2: 47 Writes Got Through

#claudecode #tooling #ai #productivity

6 min read

jidonglab

Sep 21

Constrained Decoding: Your JSON Schema Key Order Is a Prompt

#llm #ai #python #machinelearning

6 min read

jidonglab

Sep 21

npm publish Ignores .gitignore: The .npmignore Override Rule

#tooling #cli #devops #tutorial

5 min read

jidonglab

Sep 20

Playwright MCP Token Usage: 9 Tool Calls, 62% of My Context

#claudecode #ai #tooling #automation

6 min read

jidonglab

Sep 20

Anthropic Batch API: 112 of My 1,842 Jobs Never Came Back

#ai #claude #python #automation

6 min read

jidonglab

Sep 19

all-MiniLM-L6-v2 Truncates at 256 Tokens: Your RAG Chunks Are Half Blind

#llm #machinelearning #python #ai

6 min read

jidonglab

Sep 19

GitHub Actions pull_request Runs on a Merge Commit You Never Pushed

#devops #tooling #tutorial

6 min read

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1 Week Community Wellness Streak

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