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This particular usage uses the Turso Cloud to sync the local Turso databases and assumes that you have an account.

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Last Push Wins

Turso sync uses a last push wins strategy. When two clients modify the same data and push, the last push determines the final state on the remote.
TimeClient AClient B
T1UPDATE users SET name='Alice' WHERE id=1
T2UPDATE users SET name='Bob' WHERE id=1
T3push()
T4push()
Result: The name is 'Bob' because Client B pushed last.

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What Happens During Pull

When you pull and have unpushed local changes:
  1. Your local database is rolled back to the last synced state
  2. Remote changes are applied
  3. Your unpushed local changes are replayed on top
This rollback-and-replay happens atomically — if anything fails, your database remains in its previous state.