Having lots if insert into database for thread analytics

I have a thread analytics table where each time a new user visits a page it insert the ip address and also a view of "1" and the thread id

If there are over a 1000 rows for each thread does it slow down the page?  Is it OK to create a new row for each new visit. I am just worried about how many rows I can have in my table.

PHP Code:

<?php

class Thread_model extends CI_Model {

    public function thread_analytics($thread_id) {
        $this->db->where('thread_id', $thread_id);
        $this->db->where('ip_address', $this->input->ip_address());
        $query = $this->db->get($this->db->dbprefix . 'thread_analytics');

        if ($query->num_rows() == 1) {

            return false;
        
        } else {

            $data = array(
                'thread_id' => $thread_id,
                'ip_address' => $this->input->ip_address(),
                'views' => '1',
                'date_created' => date('Y-m-d H:i:s')
            );

            $this->db->insert($this->db->dbprefix . 'thread_analytics', $data);
        }
    }

    public function total_thread_views($thread_id) {
        $this->db->where('thread_id', $thread_id);
        $this->db->where('views', '1');
        return $this->db->count_all_results('thread_analytics');
    }
} 


There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!