9 min read
Shopify Cart Attributes: Passing Context Through Checkout
Cart attributes carry page context into the order without touching the product itself
The Lab · Written in the open
Lab.
Working notes from the studio. The tools I build, the workflows I keep, the mistakes I paid for.
470 entries · latest 2026-10-23
9 min read
The Weekly Operating Rhythm That Keeps a Solo Studio Shipping
Monday is planning only, no building, protects the week's focus
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The Handover Doc Template I Give Every Collaborator
A one-page handover doc kills the same five questions every collaborator asks
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Structured Logging I Add on Day One of Every Project
Three fields on every log line: request_id, event, context object with actual values
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I Found the Exact Recursion Depth That Crashes Node
Plain recursion crashed at exactly 9,275 calls deep. An iterative rewrite handled 215 times that depth in 13ms.
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Binary Search vs Array.includes() on a 50,000-Row Catalog
A one-line swap took a 50,000-row lookup from 408ms to under 1ms. I measured both methods instead of…
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Writing Idempotent Webhooks: Patterns That Survive Retries
Every webhook arrives twice eventually, so design for it from day one
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How I Turn One Long Article Into a Week of Short Posts
One 1,800-word article yields 7 short posts if you mine it for atomic ideas
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git bisect run on 1,000 Commits: 10 Runs and 3 Wrong Answers
I planted a bug in a 1,000-commit repo. git bisect run found it in 10 runs, after three…
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I Measured content-visibility: auto on 3,000 Cards
I rendered 48 to 3,000 product cards in headless Chromium with and without content-visibility. Long pages win big,…
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Claude Sonnet 4.5 Retires November 30: What to Check Now
Anthropic deprecated Claude Sonnet 4.5 on September 30; API calls to it fail after November 30, 2026.
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OhNine 2.1: My Claude Limit Crab Has Moods
Claw'd now sweats at 91% and lies next to a RIP tombstone when the weekly cap hits. 18…