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Feature

Percentage rollouts

Weighted, deterministic rollouts in basis points. Raising a percentage only adds users.

A rule can serve a weighted split of variations instead of one variation. Weights are basis points (hundredths of a percent) and must add up to exactly 10000; anything else makes the flag malformed, and it returns your default.

Bucketing hashes a per flag-and-environment salt with the context’s key, or another attribute you choose, using a documented hash shared by the SDK and the server. The same user gets the same answer on every evaluation, in every process.

Weights are cumulative in listed order, so moving a rollout from 10% to 25% to 50% only adds users. Nobody already in the 10% leaves it.