Hi, There is the archive_status directory in pg_wal, and if there are files with suffixes ".ready", you can archive not only the file which was requested, but quite a few more if there are ".ready" files available. After that you have to rename ".ready" to ".done". Postgres will not call archive_command for files which already marked as ".done".
I think most of the good backup tools already doing that. For example, pgBackRest, wal-e, wal-g (just named the tools I was working with)/ Regards, -- Alexander Kukushkin
