PG replicas and transactions atomicity

From: Louis Laborde <louis(dot)laborde(at)gmail(dot)com>
To: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: PG replicas and transactions atomicity
Date: 2023-01-05 20:07:44
Message-ID: CAEbmry5QBa3UGaP+a7Yta1bDFDu_XPS3v=OTaE=yw2rKTaKspg@mail.gmail.com
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Are PG replicas updated atomically following the same transactions
boundaries as the source DB ?
For example, if 2 rows from a named table are updated atomically (with a
transaction) in the source DB, is there a guarantee that both
changes will be done atomically in a replica, or is there a time window
where only one changed row could be visible in the replica ?

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