WordPress/wp-admin/includes
Felix Arntz fab7a3bb92 Site Health: Introduce page cache check.
This changeset adds a new `page_cache` check which determines whether the site uses a full page cache, and in addition assesses the server response time. If no page cache is present and the server response time is slow, the check will suggest use of a page cache.

A few filters are included for customization of the check:
* `site_status_good_response_time_threshold` filters the number of milliseconds below which the server response time is considered good. The default value is based on the `server-response-time` Lighthouse audit and can be altered using this filter.
* `site_status_page_cache_supported_cache_headers` filters the map of supported cache headers and their callback to determine whether it was a cache hit. The default list includes commonly used cache headers, and it is filterable to support e.g. additional cache headers used by specific vendors.

Note that due to the nature of this check it is only run in production environments.

Props furi3r, westonruter, spacedmonkey, swissspidy, Clorith.
Fixes #56041.

Built from https://develop.svn.wordpress.org/trunk@54043


git-svn-id: http://core.svn.wordpress.org/trunk@53602 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-08-31 22:46:11 +00:00
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admin-filters.php Bootstrap/Load: Move some more administration-related hooks to admin-filters.php. 2022-04-28 16:39:11 +00:00
admin.php Code Modernization: Replace dirname( __FILE__ ) calls with __DIR__ magic constant. 2020-02-06 06:33:11 +00:00
ajax-actions.php Media: Cache parent posts in query-attachments AJAX endpoint. 2022-08-12 00:17:07 +00:00
bookmark.php Docs: Add missing description for $pagenow global in various functions. 2022-04-04 18:26:06 +00:00
class-automatic-upgrader-skin.php Code Modernization: Fix reserved keyword and parameter name mismatches for parent/child classes in WP_Upgrader_Skin::feedback(). 2021-09-09 13:48:56 +00:00
class-bulk-plugin-upgrader-skin.php Code Modernization: Explicitly declare all properties in WP_Ajax_Upgrader_Skin. 2022-08-29 12:46:10 +00:00
class-bulk-theme-upgrader-skin.php Code Modernization: Explicitly declare all properties in WP_Ajax_Upgrader_Skin. 2022-08-29 12:46:10 +00:00
class-bulk-upgrader-skin.php Code Modernization: Fix parameter name mismatches for parent/child classes in WP_Upgrader_Skin::error(). 2021-09-09 13:59:56 +00:00
class-core-upgrader.php Administration: Replace "can not" with "cannot" after [53131]. 2022-04-11 11:50:01 +00:00
class-custom-background.php Coding Standards: Escape the home URL in the "Background updated. Visit your site" message. 2022-07-04 10:14:14 +00:00
class-custom-image-header.php Coding Standards: Escape the home URL in the "Header updated. Visit your site" message. 2022-07-04 10:11:12 +00:00
class-file-upload-upgrader.php Coding Standards: Rename the $object variable to $attachment in several files. 2022-04-14 15:15:12 +00:00
class-ftp-pure.php Docs: Update URLs in some @link tags and switch them to HTTPS. 2019-11-01 14:57:02 +00:00
class-ftp-sockets.php Administration: Replace contracted verb forms for better consistency. 2022-03-22 16:25:03 +00:00
class-ftp.php Code Modernization: Rename parameters that use reserved keywords in wp-admin/includes/class-ftp.php. 2022-03-26 15:28:08 +00:00
class-language-pack-upgrader-skin.php Code Modernization: Fix parameter name mismatches for parent/child classes in WP_Upgrader_Skin::error(). 2021-09-09 13:59:56 +00:00
class-language-pack-upgrader.php Administration: Remove self-reference ("we") in WordPress Admin. 2022-04-11 11:42:04 +00:00
class-pclzip.php Filesystem API: Make sure to only call fread() on non-empty files in PclZip::privAddFile(). 2021-08-29 01:33:58 +00:00
class-plugin-installer-skin.php Code Modernization: Replace phpversion() function calls with PHP_VERSION constant. 2022-05-20 17:38:14 +00:00
class-plugin-upgrader-skin.php Text Changes: Unify various "Back to..." vs. "Return to..." vs. "Go to..." strings. 2020-11-09 10:53:10 +00:00
class-plugin-upgrader.php Code Modernization: Replace phpversion() function calls with PHP_VERSION constant. 2022-05-20 17:38:14 +00:00
class-theme-installer-skin.php Code Modernization: Replace phpversion() function calls with PHP_VERSION constant. 2022-05-20 17:38:14 +00:00
class-theme-upgrader-skin.php Text Changes: Unify various "Back to..." vs. "Return to..." vs. "Go to..." strings. 2020-11-09 10:53:10 +00:00
class-theme-upgrader.php Code Modernization: Replace phpversion() function calls with PHP_VERSION constant. 2022-05-20 17:38:14 +00:00
class-walker-category-checklist.php Code Modernization: Fix reserved keyword and parameter name mismatches for parent/child classes in Walker::end_el(). 2021-09-09 13:03:55 +00:00
class-walker-nav-menu-checklist.php Code Modernization: Fix last parameter name mismatches for parent/child classes in Walker::start_el(). 2021-09-09 12:39:59 +00:00
class-walker-nav-menu-edit.php Menus: Use more appropriate escaping functions in class Walker_Nav_Menu_Edit. 2022-07-05 08:06:17 +00:00
class-wp-ajax-upgrader-skin.php Code Modernization: Explicitly declare all properties in WP_Ajax_Upgrader_Skin. 2022-08-29 12:46:10 +00:00
class-wp-application-passwords-list-table.php Application Passwords: Allow enter key to submit profile form. 2021-06-07 23:49:58 +00:00
class-wp-automatic-updater.php Code Modernization: Replace phpversion() function calls with PHP_VERSION constant. 2022-05-20 17:38:14 +00:00
class-wp-comments-list-table.php Docs: Use third-person singular verbs for function descriptions in WP_Comments_List_Table class, as per docblock standards. 2022-07-04 08:20:15 +00:00
class-wp-community-events.php Administration: Properly handle HTML entities in the News & Events dashboard widget. 2022-01-20 09:19:07 +00:00
class-wp-debug-data.php Code Modernization: Replace phpversion() function calls with PHP_VERSION constant. 2022-05-20 17:38:14 +00:00
class-wp-filesystem-base.php Coding Standards: Rename the $file parameter to $path in some WP_Filesystem_* methods. 2022-08-09 11:33:10 +00:00
class-wp-filesystem-direct.php Coding Standards: Rename the $file parameter to $path in some WP_Filesystem_* methods. 2022-08-09 11:33:10 +00:00
class-wp-filesystem-ftpext.php Upgrade/Install: Make WP_Filesystem_FTPext::size() return false on failure. 2022-08-16 13:41:14 +00:00
class-wp-filesystem-ftpsockets.php Coding Standards: Rename the $file parameter to $path in some WP_Filesystem_* methods. 2022-08-09 11:33:10 +00:00
class-wp-filesystem-ssh2.php Coding Standards: Rename the $file parameter to $path in some WP_Filesystem_* methods. 2022-08-09 11:33:10 +00:00
class-wp-importer.php Code Modernization: Rename parameters that use reserved keywords in wp-admin/includes/class-wp-importer.php. 2022-03-30 10:45:06 +00:00
class-wp-internal-pointers.php External Libraries: Further fix jQuery deprecations in WordPress core. 2021-11-30 17:18:01 +00:00
class-wp-links-list-table.php Code Modernization: Fix parameter name mismatches for parent/child classes in WP_List_Table::handle_row_actions(). 2021-09-07 19:24:53 +00:00
class-wp-list-table-compat.php Docs: Add missing descriptions for _WP_List_Table_Compat methods. 2020-11-14 16:54:08 +00:00
class-wp-list-table.php Administration: Improve performance of List Tables. 2022-08-09 00:33:11 +00:00
class-wp-media-list-table.php Accessibility: List Tables: Hide the Comments column icon and title attribute from screen readers. 2022-05-19 15:54:15 +00:00
class-wp-ms-sites-list-table.php Docs: Various inline documentation corrections and improvements. 2021-12-07 12:20:02 +00:00
class-wp-ms-themes-list-table.php Accessibility: Administration: Improve aria-label on network admin Themes screen. 2021-09-10 14:49:00 +00:00
class-wp-ms-users-list-table.php I18N: Use a translatable string for displaying a user's first name and last name. 2022-06-14 14:43:12 +00:00
class-wp-plugin-install-list-table.php Docs: Improve plugin_install_action_links filter's docs. 2022-05-02 13:07:14 +00:00
class-wp-plugins-list-table.php Docs: Remove code tags from WordPress function names within inline documentation. 2022-08-11 13:55:08 +00:00
class-wp-post-comments-list-table.php Coding Standards: Upgrade WPCS to 1.0.0 2018-08-17 01:51:36 +00:00
class-wp-posts-list-table.php Accessibility: List Tables: Hide the Comments column icon and title attribute from screen readers. 2022-05-19 15:54:15 +00:00
class-wp-privacy-data-export-requests-list-table.php Privacy: Fix "Retry" action after a personal data export failure. 2022-03-10 19:22:01 +00:00
class-wp-privacy-data-removal-requests-list-table.php Coding Standards: Fix WPCS issues in [49258]. 2020-10-20 21:20:07 +00:00
class-wp-privacy-policy-content.php Administration: Remove self-reference ("we") in WordPress Admin. 2022-04-11 11:42:04 +00:00
class-wp-privacy-requests-table.php Docs: Document the globals used in some Privacy API methods. 2021-11-24 11:41:03 +00:00
class-wp-screen.php Docs: Use third-person singular verbs for function descriptions in the WP_Screen API. 2022-06-16 23:10:10 +00:00
class-wp-site-health-auto-updates.php Administration: Replace contracted verb forms for better consistency. 2022-03-22 16:25:03 +00:00
class-wp-site-health.php Site Health: Introduce page cache check. 2022-08-31 22:46:11 +00:00
class-wp-site-icon.php Code Modernization: Rename parameters that use reserved keywords in wp-admin/includes/class-wp-site-icon.php. 2022-04-11 14:21:09 +00:00
class-wp-terms-list-table.php Taxonomy: Introduce the is_term_publicly_viewable() function. 2022-08-13 22:44:09 +00:00
class-wp-theme-install-list-table.php Themes: Add version to theme screenshot URL for better browser cache handling. 2022-03-17 22:21:07 +00:00
class-wp-themes-list-table.php Themes: Add version to theme screenshot URL in WP_Themes_List_Table. 2022-03-18 12:44:04 +00:00
class-wp-upgrader-skin.php Code Modernization: Fix parameter name mismatches for parent/child classes in WP_Upgrader_Skin::error(). 2021-09-09 13:59:56 +00:00
class-wp-upgrader-skins.php Docs: Add missing @deprecated tags in the file docblock of some deprecated files. 2019-10-08 17:19:04 +00:00
class-wp-upgrader.php Upgrade/Install: Add a conditional to facilitate testing of the Rollbacks feature project. 2022-06-26 12:37:18 +00:00
class-wp-users-list-table.php I18N: Use a translatable string for displaying a user's first name and last name. 2022-06-14 14:43:12 +00:00
comment.php Docs: Use third-person singular verbs for function descriptions in wp-admin/includes/comment.php, as per docblocks standards. 2022-07-20 22:15:10 +00:00
continents-cities.php I18N: Update list of continents and cities for the timezone selection. 2021-03-19 15:42:04 +00:00
credits.php Help/About: Don't output empty <span> tags on Credits screen. 2021-10-19 23:09:00 +00:00
dashboard.php Docs: Remove code tags from WordPress function names within inline documentation. 2022-08-11 13:55:08 +00:00
deprecated.php Media: Remove attachment_fields_to_save filter and deprecate image_attachment_fields_to_save(). 2022-04-20 08:13:10 +00:00
edit-tag-messages.php Docs: Various inline documentation corrections and improvements. 2021-12-07 12:20:02 +00:00
export.php Docs: Various docblock improvements in Export Administration API, as per docs standards. 2022-07-29 08:14:12 +00:00
file.php Coding Standards: Use MINUTE_IN_SECONDS where appropriate. 2022-07-17 02:18:09 +00:00
image-edit.php Docs: Correct the return type for wp_save_image_file(). 2022-06-21 11:16:17 +00:00
image.php Media: use original image size data for full size secondary mime generation. 2022-08-05 22:16:13 +00:00
import.php Docs: Various docblock improvements in Importer Administration API, as per docs standards. 2022-07-29 09:22:10 +00:00
list-table.php Code Modernization: Rename parameters that use reserved keywords in wp-admin/includes/list-table.php. 2022-04-15 10:52:11 +00:00
media.php General: Add required fields helper functions for better reusability. 2022-08-12 12:11:09 +00:00
menu.php Coding Standards: Correct the $items_count variable in add_menu_classes(). 2022-04-17 14:44:07 +00:00
meta-boxes.php Revisions: Use wp_get_latest_revision_id_and_total_count() where appropriate. 2022-08-05 13:39:11 +00:00
misc.php Editor: Include user's name in the wp_refresh_post_lock() response. 2022-07-11 18:18:13 +00:00
ms-admin-filters.php Docs: Improve comments in some wp-admin files per the documentation standards. 2020-01-29 00:35:08 +00:00
ms-deprecated.php I18N: Capitalize translator comments consistently, add trailing punctuation. 2019-09-03 00:41:05 +00:00
ms.php Code Modernization: Rename parameters that use reserved keywords in wp-admin/includes/ms.php. 2022-04-18 10:33:09 +00:00
nav-menu.php Menus: Use correct parameter in _wp_nav_menu_meta_box_object(). 2022-04-19 15:59:10 +00:00
network.php Administration: Add labels to read-only form fields. 2022-07-21 09:04:14 +00:00
noop.php Code Modernization: Remove conditional use of PHP realpath(). 2019-09-20 20:46:56 +00:00
options.php External Libraries: Further fix jQuery deprecations in WordPress core. 2021-11-30 17:18:01 +00:00
plugin-install.php Coding standards: Properly escape URLs returned by self_admin_url() calls. 2022-08-05 06:12:10 +00:00
plugin.php Docs: Remove code tags from WordPress function names within inline documentation. 2022-08-11 13:55:08 +00:00
post.php Posts, Post Types: Standardize on $post parameter name where appropriate. 2022-07-18 17:37:17 +00:00
privacy-tools.php General: Replace all esc_url_raw() calls in core with sanitize_url(). 2022-06-01 18:14:10 +00:00
revision.php Revisions: Update the "last revision" wording to "latest revision" in various files. 2022-07-25 19:30:09 +00:00
schema.php Administration: Change default site tagline to an empty string. 2022-08-03 12:20:16 +00:00
screen.php Coding Standards: Use strict comparison in wp-admin/includes/screen.php. 2021-05-09 20:27:02 +00:00
taxonomy.php Docs: Use third-person singular verbs for function descriptions in the Taxonomy Administration API. 2022-06-16 23:39:08 +00:00
template.php Docs: Correct and improve the documented types for various functions and hooks. 2022-08-11 14:03:09 +00:00
theme-install.php Coding standards: Properly escape URLs returned by self_admin_url() calls. 2022-08-05 06:00:09 +00:00
theme.php General: Replace all esc_url_raw() calls in core with sanitize_url(). 2022-06-01 18:14:10 +00:00
translation-install.php Docs: Fix incorrect type in translations_api and translations_api_result docblocks. 2022-01-27 21:15:03 +00:00
update-core.php Upgrade/Install: Update $_old_files for 6.0. 2022-05-23 17:02:16 +00:00
update.php Docs: Improve description for wp_plugin_update_rows() and wp_theme_update_rows(). 2022-07-09 12:59:11 +00:00
upgrade.php Database: Ignore display width for integer data types in dbDelta() on MySQL 8.0.17 or later. 2022-08-15 13:18:13 +00:00
user.php Text Changes: Improve consistency of admin error notices. 2022-06-02 15:05:13 +00:00
widgets.php Docs: Capitalize "ID", when referring to a widget ID or sidebar ID, in a more consistent way. 2021-12-13 10:21:07 +00:00