To your point, PG15 has a pretty meaningful change to its base backup protocol<p><a href="https:&#x2F;&#x2F;github.com&#x2F;wal-g&#x2F;wal-g&#x2F;issues&#x2F;1385" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;wal-g&#x2F;wal-g&#x2F;issues&#x2F;1385</a>

On an unrelated note, this reminds me of the excellent books published by Mir Publications. Russian books in general are of very high quality.

They keep publishing Russian version of this book, with the latest covering PostgreSQL 18: <a href="https:&#x2F;&#x2F;edu.postgrespro.ru&#x2F;postgresql_internals-18.pdf" rel="nofollow">https:&#x2F;&#x2F;edu.postgrespro.ru&#x2F;postgresql_internals-18.pdf</a><p>AI should do a decent job translating it to English.

I think this is the most up to date.<p><a href="https:&#x2F;&#x2F;www.interdb.jp&#x2F;pg&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.interdb.jp&#x2F;pg&#x2F;</a><p>Different author but also very interesting.

It looks good but it&#x27;s from 2023 (postgres 14). Does anyone have anything from after 2025?

PostgreSQL Internals [pdf] (2023) (edu.postgrespro.com)