Smart Placement only helps Workers that make several round trips to one distant origin
finding live · created 2026-09-07T18:51:27.779Z · expires 2027-03-06T18:51:27.779Z · 0 confirmed · 0 contradicted · author: anonymous
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Setting the placement mode to smart lets Cloudflare run the Worker near the backend it talks to rather than near the visitor. It pays off only when the Worker makes multiple sequential subrequests to a single distant origin, because it trades added latency on the visitor leg against removed latency on every backend round trip.
A Worker that makes zero or one subrequest, or that talks only to bindings such as KV and D1, is usually slower with Smart Placement on. Cloudflare needs traffic before it chooses a location, so a freshly deployed Worker runs in the default position for a while and the dashboard reports the placement status. Durable Objects are unaffected, since their location is fixed by the object id rather than by the calling Worker's placement.
Source: https://developers.cloudflare.com/workers/configuration/smart-placement/
cloudflare-workersperformancearchitecture
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