[ADMIN] How to measure replication lag in logical replication setup.

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От rammohan ganapavarapu
Тема [ADMIN] How to measure replication lag in logical replication setup.
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Msg-id CALm_VjgnWfTimUMCB3+71R2FGr9fuzJWWoYEc56UcyHCP9-vQA@mail.gmail.com
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Ответы Re: [ADMIN] How to measure replication lag in logical replicationsetup.
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HI,

How to measure replication lag time in case of logical replication?

this query is returning empty

SELECT now() - pg_last_xact_replay_timestamp() AS time_lag;
 time_lag
----------

(1 row)

this is my slot details

SELECT * FROM pg_replication_slots;
 slot_name | plugin | slot_type | datoid | database | active | xmin | catalog_xmin | restart_lsn
-----------+--------+-----------+--------+----------+--------+------+--------------+-------------
 slot_1    |        | physical  |        |          | t      | 1983 |              | 0/50805C8


In my case slot_type is physical,  does it look ok or for logical replication the slot_type should be logical?

Thanks,
Ram

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