A tool for synchronizing files, with saving data on modification of a file on the source server?

Question

linux

Hello.
Tell me, is there any tool for data synchronization, like rsync, but storing file modification data on the origin server?
Let me explain what I want: when starting synchronization, rsync compares the modification time and file size on both the source and target servers, but I need to exclude read requests to the backup server, so I'm interested in a tool that would save this data to its database on the source server, and the next time it would poll the files only locally, and only if the size and time did not match, would synchronize them with another server.

Answer 1

Synchronization

Answer 2

BACKUP DATA USING THE DUPLICITY UTILITY
www.linuxspace.org/archives/5608