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#debugging

Troubleshooting code issues

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The same failed payment destroyed one customer's data and left the next one's alone

The same failed payment destroyed one customer's data and left the next one's alone

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2 min read
The secret was correct. The first byte wasn't.

The secret was correct. The first byte wasn't.

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Comments 2
3 min read
One Letter Broke Four Toolchains. A Symlink Didn't Fix It.

One Letter Broke Four Toolchains. A Symlink Didn't Fix It.

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6 min read
The Negative Test That Passed for the Wrong Reason

The Negative Test That Passed for the Wrong Reason

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Comments 14
4 min read
strace in production: when your process won't start and logs say nothing

strace in production: when your process won't start and logs say nothing

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2 min read
Two Tenants Got the Same Free-Model Answer Because My Cache Key Ignored the System Prompt

Two Tenants Got the Same Free-Model Answer Because My Cache Key Ignored the System Prompt

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4 min read
I built a WhatsApp bot to check WiFi balances, and TP-Link's own API fought me the whole way

I built a WhatsApp bot to check WiFi balances, and TP-Link's own API fought me the whole way

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4 min read
"Error Loading Dashboard" with Valid Session on First Visit: The Cookie Wasn't There Yet

"Error Loading Dashboard" with Valid Session on First Visit: The Cookie Wasn't There Yet

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4 min read
The Cache Hit Ratio Was Fine, but the Burst Still Melted the Database

The Cache Hit Ratio Was Fine, but the Burst Still Melted the Database

Comments
5 min read
Diff Every Tool Call: Replaying Agent Runs from a JSONL Trace

Diff Every Tool Call: Replaying Agent Runs from a JSONL Trace

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Comments 3
4 min read
Git Bisect for Your Data

Git Bisect for Your Data

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Comments 3
9 min read
Your WebSocket ping is answered by the edge, not your Durable Object

Your WebSocket ping is answered by the edge, not your Durable Object

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3 min read
My check passed because the bug preserved the exact thing it was measuring

My check passed because the bug preserved the exact thing it was measuring

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Comments 1
3 min read
The Worker Kept Hitting the Old Database After the Config Was Changed

The Worker Kept Hitting the Old Database After the Config Was Changed

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5 min read
The demo is the test

The demo is the test

Comments
15 min read
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