wehub-resource-sync
16 lines
628 B
TypeScript
16 lines
628 B
TypeScript
/**
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* Deterministic 0-99 bucket for an org id, stable across processes and deploys.
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* FNV-1a (non-crypto): we only need determinism + uniform spread, not collision
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* resistance. Used for nested percentage rollout: `hashBucket(orgId) < percentage`.
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* Ramping the percentage down keeps a strict subset (the low buckets), so an org
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* never flaps in and out as the dial moves.
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*/
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export function hashBucket(orgId: string): number {
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let hash = 0x811c9dc5; // FNV offset basis
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for (let i = 0; i < orgId.length; i++) {
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hash ^= orgId.charCodeAt(i);
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hash = Math.imul(hash, 0x01000193) >>> 0;
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}
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return hash % 100;
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}
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