Uncached functions

VIP Go platform specific

This document is for sites running on VIP Go.

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WordPress core has a number of functions that, for various reasons, are uncached, which means that calling them will always result in an SQL query. Below, we outline some of these functions:

  • get_posts()
    • Unlike WP_Query, the results of get_posts() are not cached via Advanced Post Cache.
    • Use WP_Query instead, or set 'suppress_filters' => false.
      $args = array(
      	'post_type'        => 'post',
      	'posts_per_page'   => 3,
      	'suppress_filters' => false,
      );
      $query = get_posts( $args );
      
    • When using WP_Query instead of get_posts don’t forget about setting ignore_sticky_posts and no_found_rows params appropriately (both are hardcoded inside a get_posts function with value of true )
  • wp_get_recent_posts()
    • See get_posts()
  • get_children()
    • Similar to get_posts(), but also performs a no-LIMIT query among other bad things by default. Alias of break_my_site_now_please(). Do not use. Instead do a regular WP_Query and make sure that the post_parent you are looking for is not 0 or a falsey value. Also make sure to set a reasonable posts_per_page, get_children will do a -1 query by default, a maximum of 100 should be used (but a smaller value could increase performance)
  • term_exists()
    • Use wpcom_vip_term_exists() instead
  • get_page_by_title()
  • get_page_by_path()
    • Use wpcom_vip_get_page_by_path() instead
  • url_to_postid()
    • Use wpcom_vip_url_to_postid() instead
  • count_user_posts()
    • Use wpcom_vip_count_user_posts() instead.
  • wp_old_slug_redirect()
    • Use wpcom_vip_old_slug_redirect() instead.
  • get_adjacent_post()get_previous_post()get_next_post(), previous_post_link(), next_post_link()
    • Use  wpcom_vip_get_adjacent_post() instead.
  • attachment_url_to_postid()
    • Use  wpcom_vip_attachment_url_to_postid() instead.
  • wp_oembed_get()
    • Use wpcom_vip_wp_oembed_get() instead.

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