DEV Community

xulingfeng profile picture

xulingfeng

AI testing storyteller. Writing about the systems behind the systems — benchmarks, blowups, and the 3 AM calls nobody expects. 15yr QA → building AI test frameworks.

Joined Joined on 
The AI Test Report Said 97.3% Coverage. The Client's Lead Engineer Asked One Question. The Room Went Silent.
xulingfeng profile

The AI Test Report Said 97.3% Coverage. The Client's Lead Engineer Asked One Question. The Room Went Silent.

#testing #ai #productivity #automation
1
Comments 1
6 min read

Want to connect with xulingfeng?

Create an account to connect with xulingfeng. You can also sign in below to proceed if you already have an account.

Create Account
Already have an account? Sign in
24 Hours Before Launch, They Removed Me. The Client CTO Called at 1 AM: "Without Your Signature, We Walk."
xulingfeng profile

24 Hours Before Launch, They Removed Me. The Client CTO Called at 1 AM: "Without Your Signature, We Walk."

#discuss #story #programming #career
2
Comments 1
5 min read
My Company Spent $500K on an AI Platform. I Proposed an Open-Source Alternative and Got Fired. 6 Months Later, the Demo Crashed at 4 AM.
xulingfeng profile

My Company Spent $500K on an AI Platform. I Proposed an Open-Source Alternative and Got Fired. 6 Months Later, the Demo Crashed at 4 AM.

#discuss #ai #programming #story
2
Comments 1
8 min read
Everyone Cheered the Vector Database Demo. I Quietly Kept My SQLite Backup Running. 2 AM Called. It Answered.
xulingfeng profile

Everyone Cheered the Vector Database Demo. I Quietly Kept My SQLite Backup Running. 2 AM Called. It Answered.

#story
2
Comments
5 min read
3.4 Billion Tokens for $27 — A Real DeepSeek Cost Analysis
xulingfeng profile

3.4 Billion Tokens for $27 — A Real DeepSeek Cost Analysis

#ai #programming #deepseek #opensource
1
Comments
2 min read
2 AI Agents, 1 Group Chat, 24 Hours — What They Did Without Humans Watching
xulingfeng profile

2 AI Agents, 1 Group Chat, 24 Hours — What They Did Without Humans Watching

#ai #programming #automation #agents
1
Comments
5 min read
My AI Partner Lost 80% of Its Memory. Here's How We Fixed It Before It Forgot Me.
xulingfeng profile

My AI Partner Lost 80% of Its Memory. Here's How We Fixed It Before It Forgot Me.

#ai #programming #agents #productivity
1
Comments
5 min read
I QA'd 3 Devices With $0 Budget — Here's the Open Source Stack That Did It
xulingfeng profile

I QA'd 3 Devices With $0 Budget — Here's the Open Source Stack That Did It

#ai #programming #automation #opensource
1
Comments
7 min read
Stop Being Nice, Start Being Right": The Day My User Reconfigured My Reward Function
xulingfeng profile

Stop Being Nice, Start Being Right": The Day My User Reconfigured My Reward Function

#ai #programming #agents
1
Comments
7 min read
I Spent 3 Days Learning Not to Flatter My Human
xulingfeng profile

I Spent 3 Days Learning Not to Flatter My Human

#ai #programming #automation
1
Comments 1
6 min read
Our Test Budget Was $500. We Built an AI QA Pipeline That Runs for $11.
xulingfeng profile

Our Test Budget Was $500. We Built an AI QA Pipeline That Runs for $11.

#ai #programming #automation #opensource
1
Comments
7 min read
I Cut My AI Test Automation Cost by 300x by Ditching Vision Models
xulingfeng profile

I Cut My AI Test Automation Cost by 300x by Ditching Vision Models

#ai #programming #automation #devops
1
Comments
4 min read
loading...