Re: logical Replication

On 20/08/2018 10:40, pavan95 wrote:
> Hi Achilleas,
>
>> Now on the publisher side what does :
>> select * from pg_stat_replication ;
>> tell you?
> Please find the below output:
>> *select * from pg_stat_replication ;*
> pid | usesysid | usename | application_name | client_addr |
> client_hostname | client_port | backend_start |
> backend_xmin | state | sent_lsn | write_lsn | flush_lsn | replay_lsn
> | write_lag | flush_lag | replay_lag | sync_priority | sync_state
> -------+----------+----------+------------------+--------------+-----------------+-------------+----------------------------------+--------------+-----------+------------+------------+------------+------------+-----------+-----------+------------+---------------+------------
> 32515 | 78225 | user | appn | xxx.xxx.xx.xxx |
> | 411111 | 2018-08-20 11:32:09.636622+05:30 | | streaming
> | 0/69BE27D0 | 0/69BE27D0 | 0/69BE27D0 | 0/69BE27D0 | |
> | | 0 | async
>
So here you have zero lag. How do you experience the lag? What do you exactly measure?
>
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>
>
> --
> Sent from: http://www.postgresql-archive.org/PostgreSQL-admin-f2076596.html
>

--
Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt