How implement cache on Search query sql

@Decibel150,

What version of CI are you using?  Is the CI cache directory writable? Are there any errors in the CI log file? Also, have you tried this...

PHP Code:

public function search($product)
   {
       $this->db->cache_on();
       $data = $this->db
           ->select('name, slug')
           ->from('products')
           ->like('name', $product)
           ->or_like('slug', $product)
           ->limit(5)
           ->get();
        $this->db->cache_off();

       return json_encode($data->result_array());
   } 


i use the last Version (3.1.9), does not give any kind of error, and the permits are the right ones. that might be failing?