Logical decoding can be used to build synchronous
replication solutions with the same user interface as
synchronous replication for streaming replication.
To do this, the streaming replication interface (see Section 49.3)
must be used to stream out data. Clients have to send
Standby status update (F) (see
messages, just like streaming replication clients do.
A synchronous replica receiving changes via logical decoding
will work in the scope of a single database. Since, in contrast
currently is server wide, this means this technique will not
work properly if more than one database is actively used.
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