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chore(backend): short circuit satellite sync when session cookie is present #7547

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chore(backend): short circuit satellite sync when session cookie is present #7547

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5 changes: 5 additions & 0 deletions .changeset/cute-frogs-rest.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@clerk/backend': minor
---

Optimzie satellite sync flow to reduce redirects.
9 changes: 8 additions & 1 deletion packages/backend/src/tokens/request.ts
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Expand Up @@ -461,8 +461,15 @@ export const authenticateRequest: AuthenticateRequest = (async (
}
}
}

// Only trigger satellite sync handshake if we don't have session cookies.
// If we have cookies, the client is already linked - fall through to normal
// verification flow which can leverage the refresh flow for expired tokens
// instead of requiring a full multi-domain handshake.
const isLinked = authenticateContext.clientUat && authenticateContext.sessionTokenInCookie;

const isRequestEligibleForMultiDomainSync =
authenticateContext.isSatellite && authenticateContext.secFetchDest === 'document';
authenticateContext.isSatellite && authenticateContext.secFetchDest === 'document' && !isLinked;

/**
* Begin multi-domain sync flows
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