Report - WP REST Cache 2021.2.0

Does WP REST Cache work with WordPress 5.6.2 and PHP 7.4.8? A smoke test was performed on 2021-02-24 14:11:33 UTC.

Summary

Errors

1	Database errors
	No JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 77.02 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment

WordPress version	5.6.2
PHP version	7.4.8
MySQL version	8.0.21
PHP memory limit	256M

Plugin Info

Last updated	2026-07-25T08:01:00+00:00
Active installs	10,000+
WordPress.org page	https://wordpress.org/plugins/wp-rest-cache/
Badges	Get badge code

Pages 5

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=wp-rest-cache%2Fwp-rest-cache.php&plugin_status=all&paged=1&s&_wpnonce=aef8336cf4
Aspect	after-activation
HTTP status	200
Load time	0.440 s
Memory usage	3.59 MiB
JS errors	None
Resource errors	None

Settings → WP REST Cache

URL	/wp-admin/options-general.php?page=wp-rest-cache
Aspect	menu-item
HTTP status	200
Load time	0.171 s
Memory usage	2.82 MiB
JS errors	None
Resource errors	None

Settings → WP REST Cache → Endpoint API Caches

URL	/wp-admin/options-general.php?page=wp-rest-cache&sub=endpoint-api
Aspect	menu-item-tab
HTTP status	200
Load time	0.146 s
Memory usage	2.77 MiB
JS errors	None
Resource errors	None

Settings → WP REST Cache → Clear Caches

URL	/wp-admin/options-general.php?page=wp-rest-cache&sub=clear-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.157 s
Memory usage	2.79 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.164 s
Memory usage	2.69 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.260 s	0.265 s	+0.005 s	2.79 MiB	2.87 MiB	+ 82.53 KiB
/wp-admin/edit.php	0.177 s	0.190 s	+0.013 s	2.84 MiB	2.92 MiB	+ 82.53 KiB
/wp-admin/post-new.php	0.814 s	0.995 s	+0.181 s	4.93 MiB	5.04 MiB	+ 104.25 KiB
/wp-admin/upload.php	0.452 s	0.390 s	-0.062 s	2.67 MiB	2.75 MiB	+ 81.69 KiB
/wp-admin/options-writing.php	0.153 s	0.138 s	-0.015 s	2.68 MiB	2.73 MiB	+ 49.67 KiB
/wp-admin/media-new.php	0.217 s	0.165 s	-0.052 s	2.65 MiB	2.73 MiB	+ 81.86 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.187 s	0.182 s	-0.005 s	2.68 MiB	2.76 MiB	+ 82.8 KiB
/wp-admin/post-new.php?post_type=page	1.037 s	0.509 s	-0.528 s	4.92 MiB	5.02 MiB	+ 98.07 KiB
/wp-admin/options-discussion.php	0.315 s	0.254 s	-0.061 s	2.65 MiB	2.73 MiB	+ 82.19 KiB
/wp-admin/edit-comments.php	0.241 s	0.213 s	-0.028 s	2.75 MiB	2.83 MiB	+ 81.68 KiB
/	0.250 s	0.255 s	+0.005 s	2.67 MiB	2.69 MiB	+ 19.97 KiB
Average	0.373 s	0.323 s	-0.050 s	3.11 MiB	3.19 MiB	+ 77.02 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

PHP

Language		%	Lines of code	Comment lines	Files
	PHP	99.8%	1,999	1,458	25
	CSS	0.2%	4	0	1
Total			2,003	1,458	26

PHP Code Analysis | More results »

Lines of code	1,637
Total complexity	361
Median class complexity	7.0
Median method complexity	2.0
Most complex class	WP_Rest_Cache_Plugin\Includes\Caching\Caching
Most complex function	WP_Rest_Cache_Plugin\Includes\Caching\Caching::process_recursive_cache_relations()

Classes	15
Methods	116
Functions	0

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Database Tables 2

wp_wrc_caches
wp_wrc_relations

Options `wp_options` 7

wp_rest_cache_allowed_endpoints
wp_rest_cache_allowed_request_methods
wp_rest_cache_cacheable_request_headers
wp_rest_cache_database_version
wp_rest_cache_item_allowed_endpoints
wp_rest_cache_rest_prefix
wp_rest_cache_uncached_parameters

PHP Error Log 1 lines

[24-Feb-2021 14:11:48 UTC] WordPress database error Table 'wordpress.wp_wrc_relations' doesn't exist for query ALTER TABLE `wp_wrc_relations` DROP INDEX `object`; made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), WP_Hook->do_action, WP_Hook->apply_filters, WP_Rest_Cache_Plugin\Includes\Caching\Caching->update_database_structure

WP REST Cache 2021.2.0