Why Pg_dump Is Amazing (blogspot.com)
I wrote a blog post a couple of weeks ago entitled Is pg_dump a Backup Tool? In that post, I argued in the affirmative, but also said that it's probably shouldn't be your primary backup mechanism. For that, you probably shouldn't directly use anything that is included in PostgreSQL itself, but rather a well-maintained third-party backup tool such as barman or pgbackrest.