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#debugging

Troubleshooting code issues

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wp_kses deletes tags you forgot to allow, and tells you nothing

wp_kses deletes tags you forgot to allow, and tells you nothing

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4 min read
The 200 Came From a Rental

The 200 Came From a Rental

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7 min read
My safety guard was checked in 6 places. Nothing ever set it.

My safety guard was checked in 6 places. Nothing ever set it.

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6 min read
I killed the process and the drain still hung: a grandchild held the pipe

I killed the process and the drain still hung: a grandchild held the pipe

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3 min read
Testing a deterministic browser game: seeds, replay and invalid state

Testing a deterministic browser game: seeds, replay and invalid state

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2 min read
Seven ways RAG fails in production, and the fix for each

Seven ways RAG fails in production, and the fix for each

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3 min read
The Clean Server Passed. My Laptop Was Loading sitecustomize.py First.

The Clean Server Passed. My Laptop Was Loading sitecustomize.py First.

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9 min read
Ollama v1 OpenAI Compat Drops Think Toggle

Ollama v1 OpenAI Compat Drops Think Toggle

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2 min read
TRIZ Is Not Debugging: Prove the Cause First

TRIZ Is Not Debugging: Prove the Cause First

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3 min read
How I Taught My AI Coding Agent to Reproduce Bugs Before Fixing Them

How I Taught My AI Coding Agent to Reproduce Bugs Before Fixing Them

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7 min read
Three Playwright/Apify bugs that took me way too long to find (and the fixes)

Three Playwright/Apify bugs that took me way too long to find (and the fixes)

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4 min read
The Concurrency Bug That Only Appears Under Load: A Django Race Condition Story

The Concurrency Bug That Only Appears Under Load: A Django Race Condition Story

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9 min read
# Debugging a Bug Is Easier When You Stop Guessing

# Debugging a Bug Is Easier When You Stop Guessing

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3 min read
I Violated an API Contract by Fixing a Timeout Bug

I Violated an API Contract by Fixing a Timeout Bug

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7 min read
The Map Dropped a Key When Two Expiry Times Matched

The Map Dropped a Key When Two Expiry Times Matched

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6 min read
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