backup database by cloning itself

Hello,

my database is not very big so I want to adopt this backup strategy:

I want to clone my database every 1 hour to another
database 'currenttime_mydatabase' in order to have 24 backup a day,
overwriting the yesterday backups by today-same-time backups.

This is good for me because I have all the backups readily available
to be read by my program (opening the backup read only). This is a
very important for my needs.

I'm writing a script run by cron each hour to do accomplish the backup
task.

My target is to have the backup operation not affecting the users, so
I want to be able to copy a database even if the database is used by
someone.

Can I use
CREATE DATABASE my_backup_database TEMPLATE current_database?

Is there a better way to get what I need?

Thanks,
Filippo