Re: Confused about stream replication protocol documentation
| От | Fujii Masao |
|---|---|
| Тема | Re: Confused about stream replication protocol documentation |
| Дата | |
| Msg-id | a60d7cd0-6df9-bd7b-e44d-fe922728c66b@oss.nttdata.com обсуждение исходный текст |
| Ответ на | Confused about stream replication protocol documentation (Li Japin <japinli@hotmail.com>) |
| Ответы |
Re: Confused about stream replication protocol documentation
|
| Список | pgsql-hackers |
On 2020/12/22 18:07, Li Japin wrote: > Hi, all > > In Stream Replication Protocol [1], the documentation of `START_REPLICATION` message is > > XLogData (B) > … > Primary keepalive message (B) > … > Standby status update (F) > … > Hot Standby feedback message (F) > ... > > I’m confused about the means of ‘B’ and ‘F’? If it doesn't make sense, why we document here? > However, if it makes sense, should we explain it? > Can someone help me out? ‘B’ means a backend and ‘F’ means a frontend. Maybe as [1] does, we should add the note like "Each is marked to indicate that it can be sent by a frontend (F) and a backend (B)" into the description about each message format for START_REPLICATION. [1] https://www.postgresql.org/docs/devel/protocol-message-formats.html Regards, -- Fujii Masao Advanced Computing Technology Center Research and Development Headquarters NTT DATA CORPORATION
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