What is the main issue with dynamic pagination in WordPress themes?

The main issue with dynamic pagination in WordPress themes is that it can lead to performance issues as it requires querying the database for each page load. To solve this, it is recommended to implement static pagination by pre-fetching and storing all the necessary data for pagination in a transient or cache. 

// Static pagination implementation
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$offset = ($paged - 1) * $posts_per_page;
$posts = get_transient('custom_query_' . $paged);

if (false === $posts) {
    $args = array(
        'post_type' => 'post',
        'posts_per_page' => $posts_per_page,
        'offset' => $offset
    );
    $posts = new WP_Query($args);
    set_transient('custom_query_' . $paged, $posts, 12 * HOUR_IN_SECONDS);
}

if ($posts->have_posts()) : while ($posts->have_posts()) : $posts->the_post();
    // Display post content
endwhile;
endif;

// Pagination links
echo paginate_links(array(
    'total' => $posts->max_num_pages
));

Keywords

dynamic pagination WordPress themes PHP pagination error infinite loop

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