Daily learning
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A single idea per day — the kind of detail that takes two minutes to read and saves an afternoon later. The whole archive is here.
4 lessons
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4 results
August 2026
A ClusterIP cannot be pinged
Why a failed ping proves nothing about whether your Service works.
Kubernetes2 min
await null still yields
Awaiting a non-promise does not resolve synchronously.
JavaScript2 min
Jitter every TTL
Keys written together expire together, and stampede together.
System Design3 min
Disabled buttons are a dead end
They remove the affordance without explaining the requirement.
UI/UX Design2 min
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