Yesterday I made a terrible mistake by updating Yoast SEO plugin to its latest version (8.3) without prior testing.

This was caused by queries like this:


The issue is that we have millions of images, and Yoast SEO for some reason needed the ID of the post with the image.

I added define('SAVEQUERIES', true); to wp-config.php and this snippet to the theme footer:

SELECT query took 3 seconds to complete, and I was able to track it down to Yoast SEO:

wp_head, do_action('wp_head'), WP_Hook->do_action, WP_Hook->apply_filters, WPSEO_Frontend->head, do_action('wpseo_head'), WP_Hook->do_action, WP_Hook->apply_filters, WPSEO_OpenGraph->opengraph, do_action('wpseo_opengraph'), WP_Hook->do_action, WP_Hook->apply_filters, WPSEO_OpenGraph->image, WPSEO_OpenGraph_Image->__construct, WPSEO_OpenGraph_Image->set_images, WPSEO_OpenGraph_Image->set_singular_image, WPSEO_OpenGraph_Image->add_first_usable_content_image, WPSEO_Image_Utils::get_attachment_by_url, WPSEO_Image_Utils::attachment_url_to_postid, attachment_url_to_postid

The quick and dirty solution (except for downgrading Yoast SEO) was to add another index to wp_postmeta:

The things got better:

The moral of the story: test before you deploy 🙂

Newer Is Not Necessarily Better: Updated Yoast SEO to 8.3
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