Confused about stream replication protocol documentation

From: Li Japin <japinli(at)hotmail(dot)com>
To: PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Confused about stream replication protocol documentation
Date: 2020-12-22 09:07:21
Message-ID: 143A51B2-80B1-4ECD-AF67-F7061377FF63@hotmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

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?

Anyway, thanks in advance!

[1] https://www.postgresql.org/docs/devel/protocol-replication.html

--
Best regards
Japin Li

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Lukas Meisegeier 2020-12-22 09:19:48 Re: Feature Proposal: Add ssltermination parameter for SNI-based LoadBalancing
Previous Message Magnus Hagander 2020-12-22 08:51:28 Re: Better client reporting for "immediate stop" shutdowns