build-in-public Series' Articles

HaoPeng Zhang

Oct 13

Trust, but Verify: How I Test n8n LLM Workflows Before They Touch Production

#automation #ai #webdev #testing

4 min read

HaoPeng Zhang

Oct 13

From Runbook to Script: Turning My n8n Pre-Publish Checklist Into a One-Command Gate

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 13

The Human Half of the Gate: My 10-Minute Review-Queue SOP for n8n LLM Outputs

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 13

The Weekly Tally: 12 Rejected Outputs Told Me My Prompt Was the Bug, Not the Model

#automation #ai #webdev #programming

3 min read

HaoPeng Zhang

Oct 13

The Prompt Contract Test: Failing the Build When the Prompt and Its Fixtures Disagree

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 13

The Model-Change Protocol: What I Actually Do When the Tally Shows Two Weeks of Model Drift

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 14

The Retry Budget: Why My n8n LLM Workflows Retry Exactly Once, Then Page a Human

#automation #ai #webdev #programming

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2

3 min read

HaoPeng Zhang

Oct 14

Pure vs Effectful: Why My n8n Retry Policy Tags Nodes, Not Failures

#automation #ai #webdev #programming

3 min read

HaoPeng Zhang

Oct 14

The Tag Linter: How I Catch Untagged n8n Nodes Before They Reach Production

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 14

The Spread Collision: When LLM Output Silently Overwrites Your Workflow State

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 14

The Shadow Run: How I Test a New Workflow Version on Live Traffic Without Firing Side Effects

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 14

The Cost Ledger: How I Gave Every n8n Workflow Run a Price Tag

#automation #ai #webdev #programming

5 min read

HaoPeng Zhang

Oct 15

The Schema Guard: How I Catch LLM Output Changes Before They Break My n8n Pipelines

#automation #ai #webdev #programming

5 min read

HaoPeng Zhang

Oct 15

The Quiet Fail: How I Catch n8n Workflows That "Succeed" but Do Nothing

#automation #ai #webdev #programming

2

6 min read

HaoPeng Zhang

Oct 15

The Webhook Timeout Trap: Why My n8n Webhook Stopped Timing Out (Respond First, Work Later)

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 16

My 9 AM Workflow Ran at 1 AM: The Timezone Bug That Only Strikes in Production

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 16

The Hook Factory: 5 Prompt Angles I Automated in n8n (Steal the System)

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 16

The Inbox Autopilot: What 60 Days of Letting an n8n Workflow Triage My Email Taught Me

#automation #ai #webdev #programming

4

4 min read

HaoPeng Zhang

Oct 16

The SEO Blog Engine: A Teardown of the n8n Workflow That Writes My Drafts

#automation #ai #webdev #programming

3 min read

HaoPeng Zhang

Oct 17

The Content Repurposing Engine: A Teardown of the n8n Workflow That Multiplies One Post Into Five

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 17

My Free n8n Workflow Stops at the Hook. My $29 One Starts There: An Honest Diff

#automation #ai #webdev #programming

5 min read

HaoPeng Zhang

Oct 17

I Stopped Scheduling My n8n Workflows on the Hour — My 429s Disappeared

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 17

My n8n Kept Every Execution for 90 Days — Until the Database Hit 38 GB

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 17

My $79 Fixed-Price n8n Builds Are One Config File: How I Ship Custom Workflows Without Rewriting Them

#automation #ai #webdev #programming

5 min read

HaoPeng Zhang

Oct 17

I Lost a Working n8n Workflow to a Bad Edit — Now Git Versions Every Deploy

#automation #ai #webdev #programming

5 min read

HaoPeng Zhang

Oct 18

The Canary Workflow: A Fake n8n Job That Pages Me Before Clients Notice

#automation #ai #webdev #programming

6 min read

HaoPeng Zhang

Oct 18

Your n8n Webhook URL Is a Password — And You've Probably Pasted It Somewhere Public

#automation #ai #webdev #programming

10

4 min read

HaoPeng Zhang

Oct 19

Rate-Limit Your n8n Webhook After Signature Verification, Not Before

#automation #ai #webdev #programming

4 min read

HaoPeng Zhang

Oct 19

The Delivery ID Gap: Deduping Webhook Replays When the Provider Sends No ID

#automation #ai #webdev #programming

2

5 min read

HaoPeng Zhang

Oct 21

Stop Retrying a Dead Provider: The Cooldown Rule for n8n Fallback Chains

#automation #ai #webdev #programming

4 min read