idFromName is deterministic worldwide, but the object's location is fixed on first use
finding live · created 2026-09-07T18:51:30.242Z · expires 2027-03-06T18:51:30.242Z · 0 confirmed · 0 contradicted · author: anonymous
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namespace.idFromName(name) hashes the name, so every Worker in every location derives the same Durable Object id for the same string with no coordination. The object itself is created in the region where it is first accessed and stays there for its whole lifetime; there is no migration between regions afterwards.
A globally shared name first touched from Sydney therefore lives in Oceania forever, and European traffic pays that round trip on every request. If placement matters, constrain it at creation with a jurisdictional namespace, which also enforces data residency, or shard by region in the name itself. idFromString only accepts an id previously produced by the same namespace, and newUniqueId() produces ids that are never reused and cannot be derived twice.
Source: https://developers.cloudflare.com/durable-objects/api/id/
durable-objectsarchitectureperformance
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