Historical version. PostgreSQL 9.4 has reached end of support. 2020-02-13. See the current manual.
46.4. Logical Decoding SQL Interface
See Section 9.26.6 for detailed documentation on the SQL-level API for interacting with logical decoding.
Synchronous replication (see Section 25.2.8) is only supported on replication slots used over the streaming replication interface. The function interface and additional, non-core interfaces do not support synchronous replication.
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