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Notes from the build.

How the product works, why it is shaped this way, and practical guidance for teams who ship with flags.

FeaturedEngineering

How sticky percentage rollouts work without storing users

MurmurHash3, a per-flag salt and basis points: why the same user lands in the same bucket across every SDK.

Marta Oliveira · Oct 16, 2026 · 8 min read

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