Might be late to the party, but I just discovered you can do this. Super simple and easy to do.
After having a read of the linked page, I backed up and just used this option:
https://wiki.archlinux.org/title/Profile-sync-daemon
Installed, created config, and enabled service:
systemctl --user enable psd.service systemctl --user enable psd-resync.service
I definitely notice an increase in speed and less SSD usage should hopefully increase lifespan.
I’m sure there would be options for alternative distros, anything using Systemd should be able to use the daemon.
Wrong. Using inotify-wait (inotify-tools), you see that FF has a bunch of read and write access on every page load (mostly in <profile>/storage). This is with the about:config option to use RAM as cache enabled.
Every single webbrowser is one giant clusterfuck.