Awesome.
It looks good but it's from 2023 (postgres 14). Does anyone have anything from after 2025?
To your point, PG15 has a pretty meaningful change to its base backup protocol
I think this is the most up to date.
Different author but also very interesting.
They keep publishing Russian version of this book, with the latest covering PostgreSQL 18: https://edu.postgrespro.ru/postgresql_internals-18.pdf
AI should do a decent job translating it to English.
On an unrelated note, this reminds me of the excellent books published by Mir Publications. Russian books in general are of very high quality.