WP REST Cache 2020.1.1

Does WP REST Cache work with WordPress 5.4.2 and PHP 7.2.16? A smoke test was performed on .

Summary

Errors
29PHP warnings
1Database errors
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 125.76 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.025 seconds
The average page load time increased by this amount after activating the plugin.

Environment
WordPress version5.4.2
PHP version7.2.16
MySQL version8.0.15
PHP memory limit256M
Plugin Info
Last updated
Active installs 10,000+
WordPress.org page https://wordpress.org/plugins/wp-rest-cache/
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Pages 5

Plugins ‹ Test site — WordPress

Page screenshot: 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=290bdfbd18
Aspect after-activation
HTTP status 200
Load time 0.622 s
Memory usage 4.23 MiB
JS errors None
Resource errors None

Settings → WP REST Cache

Page screenshot: Settings → WP REST Cache
URL /wp-admin/options-general.php?page=wp-rest-cache
Aspect menu-item
HTTP status 200
Load time 0.170 s
Memory usage 3.8 MiB
JS errors None
Resource errors None

Settings → WP REST Cache → Endpoint API Caches

Page screenshot: 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 0.150 s
Memory usage 3.75 MiB
JS errors None
Resource errors None

Settings → WP REST Cache → Clear Caches

Page screenshot: 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 0.164 s
Memory usage 3.76 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.239 s
Memory usage 3.39 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.346 s0.313 s-0.033 s3.64 MiB3.8 MiB+ 166.07 KiB
/wp-admin/edit.php0.209 s0.227 s+0.018 s3.67 MiB3.83 MiB+ 166.35 KiB
/wp-admin/post-new.php1.300 s1.874 s+0.574 s5.43 MiB5.6 MiB+ 178.76 KiB
/wp-admin/upload.php0.516 s0.474 s-0.042 s3.5 MiB3.66 MiB+ 166.1 KiB
/wp-admin/options-writing.php0.416 s0.165 s-0.251 s3.58 MiB3.65 MiB+ 72.66 KiB
/wp-admin/media-new.php0.229 s0.195 s-0.034 s3.48 MiB3.64 MiB+ 166.27 KiB
/wp-admin/edit-tags.php?taxonomy=category0.178 s0.209 s+0.031 s3.58 MiB3.68 MiB+ 103.18 KiB
/wp-admin/post-new.php?post_type=page1.180 s1.280 s+0.100 s5.42 MiB5.52 MiB+ 102.16 KiB
/wp-admin/options-discussion.php0.244 s0.245 s+0.001 s3.48 MiB3.65 MiB+ 166.59 KiB
/wp-admin/edit-comments.php0.235 s0.207 s-0.028 s3.59 MiB3.72 MiB+ 131.38 KiB
/0.324 s0.263 s-0.061 s3.43 MiB3.4 MiB- 36.14 KiB
Average 0.471 s0.496 s+0.025 s3.89 MiB4.01 MiB+ 125.76 KiB

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

Options wp_options 7

PHP Error Log 30 lines

[12-Jun-2020 17:42:19 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:19 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
[12-Jun-2020 17:42:19 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:19 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:19 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:19 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:20 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:20 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:21 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:22 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:22 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:22 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:22 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:22 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:22 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:24 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:24 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:24 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:25 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:25 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:25 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:25 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:27 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:27 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:27 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:27 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:28 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:28 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:28 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
[12-Jun-2020 17:42:28 UTC] PHP Warning:  copy(/wp-content/mu-plugins/wp-rest-cache.php): failed to open stream: Permission denied in /wp-admin/includes/class-wp-filesystem-direct.php on line 281
See also: All tests for this plugin, How to Hide the "WP REST Cache" Admin Menu