Simple Redis dump and copy every other hour. Run puppet apply redis-backup.pp to install. The copying will overwrite the last backup from the same day.

redis-backup.pp

file{ [ '/backups', '/backups/redis' ]:
  ensure  => 'directory',
  owner   => 'root'
}
cron{ 'redis-bgsave':
  command => 'redis-cli bgsave',
  user    => 'root',
  hour    => '0-23/2',
  minute  => 3,
}

cron{ 'redis-move-backup':
  command => 'mv /var/lib/redis/dump.rdb /backups/redis/`date +%Y-%m-%d`.rdb',
  user    => 'root',
  hour    => '0-23/2',
  minute  => 23,
  require => [ File['/backups/redis'], Cron['redis-bgsave'] ]
}