WP REST Cache 2025.1.7
Does WP REST Cache work with WordPress 6.8.3 and PHP 8.1.12? A smoke test was performed on .
Summary
Errors
| 23 | PHP warnings |
| No JavaScript exceptions | |
| All test pages loaded successfully | |
| No resource errors |
Performance
Memory usage: 121.41 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 | 6.8.3 |
|---|---|
| PHP version | 8.1.12 |
| MySQL version | 10.6.10 |
| PHP memory limit | 512M |
Plugin Info
| Last updated | |
|---|---|
| Active installs | 10,000+ |
| WordPress.org page | https://wordpress.org/plugins/wp-rest-cache/ |
| Badges |
|
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=66fe15c626 |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 0.559 s |
| Memory usage | 3.75 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 | 0.173 s |
| Memory usage | 3.64 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 | 0.171 s |
| Memory usage | 3.62 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 | 0.178 s |
| Memory usage | 3.62 MiB |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.221 s |
| Memory usage | 3.53 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.352 s | 0.330 s | -0.022 s | 3.51 MiB | 3.63 MiB | + 129.05 KiB |
| /wp-admin/edit.php | 0.205 s | 0.218 s | +0.013 s | 3.57 MiB | 3.7 MiB | + 126.09 KiB |
| /wp-admin/post-new.php | 0.840 s | 0.656 s | -0.184 s | 6.06 MiB | 6.25 MiB | + 190.9 KiB |
| /wp-admin/upload.php | 0.748 s | 0.289 s | -0.459 s | 3.52 MiB | 3.63 MiB | + 105.77 KiB |
| /wp-admin/options-writing.php | 0.208 s | 0.195 s | -0.013 s | 3.5 MiB | 3.61 MiB | + 109.76 KiB |
| /wp-admin/media-new.php | 0.268 s | 0.325 s | +0.057 s | 3.49 MiB | 3.61 MiB | + 117.95 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.189 s | 0.208 s | +0.019 s | 3.5 MiB | 3.63 MiB | + 128.63 KiB |
| /wp-admin/post-new.php?post_type=page | 0.744 s | 0.617 s | -0.127 s | 6.05 MiB | 6.17 MiB | + 120.94 KiB |
| /wp-admin/options-discussion.php | 0.288 s | 0.422 s | +0.134 s | 3.5 MiB | 3.61 MiB | + 106.26 KiB |
| /wp-admin/edit-comments.php | 0.220 s | 0.220 s | +0.000 s | 3.52 MiB | 3.63 MiB | + 105.76 KiB |
| / | 0.326 s | 0.206 s | -0.120 s | 3.43 MiB | 3.53 MiB | + 94.45 KiB |
| Average | 0.399 s | 0.335 s | -0.064 s | 3.97 MiB | 4.09 MiB | + 121.41 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.
| Language | % | Lines of code | Comment lines | Files | |
|---|---|---|---|---|---|
| PHP | 92.7% | 2,250 | 1,728 | 26 | |
| Markdown | 7.2% | 174 | 0 | 1 | |
| CSS | 0.2% | 4 | 0 | 1 | |
| Total | 2,428 | 1,728 | 28 | ||
PHP Code Analysis | More results »
| Lines of code | 1,864 |
|---|---|
| Total complexity | 437 |
| Median class complexity | 7.5 |
| Median method complexity | 3.0 |
| 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 | 16 |
|---|---|
| Methods | 125 |
| 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 8
- 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_disallowed_endpoints
- wp_rest_cache_item_allowed_endpoints
- wp_rest_cache_rest_prefix
- wp_rest_cache_uncached_parameters
PHP Error Log 23 lines
[01-Oct-2025 14:58:07 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 309
[01-Oct-2025 14:58:07 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 309
[01-Oct-2025 14:58:08 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 309
[01-Oct-2025 14:58:08 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 309
[01-Oct-2025 14:58:09 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 309
[01-Oct-2025 14:58:10 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 309
[01-Oct-2025 14:58:12 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 309
[01-Oct-2025 14:58:12 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 309
[01-Oct-2025 14:58:12 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 309
[01-Oct-2025 14:58:12 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 309
[01-Oct-2025 14:58:14 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 309
[01-Oct-2025 14:58:14 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 309
[01-Oct-2025 14:58:15 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 309
[01-Oct-2025 14:58:15 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 309
[01-Oct-2025 14:58:15 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 309
[01-Oct-2025 14:58:16 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 309
[01-Oct-2025 14:58:16 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 309
[01-Oct-2025 14:58:18 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 309
[01-Oct-2025 14:58:18 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 309
[01-Oct-2025 14:58:18 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 309
[01-Oct-2025 14:58:19 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 309
[01-Oct-2025 14:58:19 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 309
[01-Oct-2025 14:58:19 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 309