The Codex page for the Object Cache class holds the answer to this:
By default, the object cache is non-persistent. This means that data stored in the cache resides in memory only and only for the duration of the request. Cached data will not be stored persistently across page loads unless you install a persistent caching plugin.
Related Posts:
- Explanation of update_post_(meta/term)_cache
- Nav and logo loading each time causing menu to move JointsWP – Foundation 6
- Is there a way to disable post meta caching for development?
- If I disable screen options, does WP still try to update post meta?
- How do I retrieve the slug of the current page?
- Steps to optimize WordPress in regard to server load and website speed?
- Most efficient way to get posts with postmeta
- Get posts by meta value
- How well does WordPress scale?
- How to extract data from a post meta serialized array?
- What are the best practices for using a caching plugin on a shared host?
- How to save an array with one metakey in postmeta?
- WordPress is stripping escape backslashes from JSON strings in post_meta
- How can I get the post ID from a WP_Query loop?
- What is the best caching option for WordPress multi-site on non-shared hosting?
- Check if Post Title exists, Insert post if doesn’t, Add Incremental # to Meta if does
- Optimize apache for WP use
- How to update_post_meta value as array
- Adding meta tag without plugin
- What’s the point of get_post_meta’s $single param?
- What is the different between an attachment in wp_posts and an attachment in wp_postmeta?
- How to edit a post meta data in a Gutenberg Block?
- Sanitizing integer input for update_post_meta
- post formats – how to switch meta boxes when changing format?
- Execute action after post is saved with all related post_meta records (data)
- Lack of composite indexes for meta tables
- Get a single post by a unique meta value
- Nginx FastCGI_Cache Vs PHP Caching
- W3 Leverage browser caching not working for google pagespeed [closed]
- if get_post_meta is empty do something
- How we get_post_meta without post id
- How get post id from meta value
- What is the code to get the download link for a product in WooCommerce?
- Safe to delete blank postmeta?
- advanced custom fields update_field for field type: Taxonomy
- Should I use Transients with W3 Total Cache APC Caching? [closed]
- Will I see a performance hit if I use native API calls like get_the_title() instead of $post->post_title?
- What is the most efficient way of querying posts based on visits and date for current day?
- update_post_meta not saving when value is zero
- Nginx + WordPress + HHVM: Why isn’t Batcache working? Would Varnish help even more?
- Content hooks vs User hooks
- Meta compare with date (stored as string) not working
- Trying to get custom post meta through Jetpack JSON API [closed]
- How to update/insert custom field(post meta) data with wordpress REST API?
- How can I reduce the number of database query calls for this custom homepage?
- Restrict post edit/delete based on user ID and custom field
- get_post_meta returning empty string when data shows in the database
- publish_post action hook doesn’t give post_meta_data
- Remove WordPress.org Meta link
- Any reason why wp_cache_set not to work?
- Remove post meta keys
- How to access the post meta of a post that has just been published?
- Why time functions show invalid time zone when using ‘c’ time format?
- Why is get_post_meta returning an array when I specify it as single?
- Extremely slow WordPress website with 6000 posts
- How to update/delete array in post meta value?
- How to get all term meta for a taxonomy – getting term_meta for taxonomy
- Adding an assisting editor box to Post page
- delete unused postmeta
- Should I sanitize custom post meta if it is going to be escaped later?
- Add post meta based on another post meta value before publish post
- Should the caching of WordPress menus be specific to each page?
- How do I retrieve multi-dimensional arrays from the wp_postmeta table, & display on a website?
- Front-end update_post_meta snippet displays white screen?
- Query between two meta values?
- Save both current and new version of post meta
- Get Advanced Custom Fields values before saving [closed]
- Give extra post-meta to RSS feeds
- How to get meta value in wp_attachment_metadata
- WP REST API “rest_no_route” when trying to update meta
- Clean up output added via wp_head()
- List posts under meta_value heading
- Transients vs CRON +Custom Fields: Caching Data Per Post
- Why am I getting an infinite loop with have_posts?
- get_post_meta – get a single value
- delete value 0 in post meta [closed]
- How to solve slow WordPress site caused by attachment_metadata
- Can I safely delete a record, manually, in the wp postmeta table?
- WordPress Menu Disappears when $query->query_vars[‘meta_key’] is set
- How to store post meta in an array?
- What action hook updates post meta?
- Can’t translate the post meta data (Date) in another language
- get_post_meta / update_post_meta array
- How to display custom post meta in the appearance->menus page
- adding a URL to a post meta
- Exclude a category from the filed under list
- get_post_meta causes database queries
- Short of raw SQL, can I query for multiple attachment metadata that have a given array key?
- How do I access post meta data when publishing a new post in Gutenberg?
- update_post_meta() not working when used with WordPress action
- Using Advanced Custom Field (ACF) to insert meta description on each page
- Triple meta_key on custom SELECT query
- get_post_custom()
- Adding meta data to an attachment post
- update_post_meta not adding anything.(Nor add_post_meta)
- loop through all meta keys with get_post_meta
- Get posts by meta value with date
- How to add meta tag to wordpress posts filter?
- How can I free up the memory used by update_post_meta?
- Are multiple values from get_post_meta guaranteed to be ordered?