WP REST Cache 2026.2.0
Does WP REST Cache work with WordPress 7.0.2 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: 140.79 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 | 7.0.2 |
|---|---|
| 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=49ab9d636a |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 0.957 s |
| Memory usage | 4.07 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 | 0.490 s |
| Memory usage | 4.03 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 | 0.695 s |
| Memory usage | 4 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 | 0.477 s |
| Memory usage | 4 MiB |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.213 s |
| Memory usage | 4.33 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.638 s | 0.551 s | -0.087 s | 3.93 MiB | 4.09 MiB | + 170.45 KiB |
| /wp-admin/edit.php | 0.601 s | 0.668 s | +0.067 s | 3.98 MiB | 4.13 MiB | + 154.43 KiB |
| /wp-admin/post-new.php | 2.024 s | 1.851 s | -0.173 s | 6.56 MiB | 6.71 MiB | + 156.7 KiB |
| /wp-admin/upload.php | 0.734 s | 0.655 s | -0.079 s | 3.89 MiB | 4.03 MiB | + 142.52 KiB |
| /wp-admin/options-writing.php | 0.531 s | 0.520 s | -0.011 s | 3.86 MiB | 3.99 MiB | + 132.61 KiB |
| /wp-admin/media-new.php | 0.568 s | 0.958 s | +0.390 s | 3.85 MiB | 3.99 MiB | + 140.8 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.515 s | 0.524 s | +0.009 s | 3.86 MiB | 4.01 MiB | + 145.98 KiB |
| /wp-admin/post-new.php?post_type=page | 1.718 s | 1.441 s | -0.277 s | 6.55 MiB | 6.69 MiB | + 146 KiB |
| /wp-admin/options-discussion.php | 0.672 s | 0.571 s | -0.101 s | 3.86 MiB | 3.99 MiB | + 129.11 KiB |
| /wp-admin/edit-comments.php | 0.526 s | 0.519 s | -0.007 s | 3.89 MiB | 4.01 MiB | + 129.3 KiB |
| / | 0.284 s | 0.219 s | -0.065 s | 4.23 MiB | 4.33 MiB | + 100.79 KiB |
| Average | 0.801 s | 0.771 s | -0.030 s | 4.41 MiB | 4.54 MiB | + 140.79 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 | 92.8% | 2,668 | 2,067 | 26 | |
| Markdown | 7.1% | 203 | 0 | 1 | |
| CSS | 0.1% | 4 | 0 | 1 | |
| Total | 2,875 | 2,067 | 28 | ||
PHP Code Analysis | More results »
| Lines of code | 2,178 |
|---|---|
| Total complexity | 494 |
| Median class complexity | 8.0 |
| Median method complexity | 2.0 |
| Most complex class | WP_Rest_Cache_Plugin\Includes\Caching\Caching |
| Most complex function | WP_Rest_Cache_Plugin\Includes\API\Endpoint_Api::skip_caching() |
| Classes | 16 |
|---|---|
| Methods | 141 |
| 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
[18-Jul-2026 17:43:18 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 328
[18-Jul-2026 17:43:18 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 328
[18-Jul-2026 17:43:20 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 328
[18-Jul-2026 17:43:20 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 328
[18-Jul-2026 17:43:22 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 328
[18-Jul-2026 17:43:23 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 328
[18-Jul-2026 17:43:25 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 328
[18-Jul-2026 17:43:26 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 328
[18-Jul-2026 17:43:26 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 328
[18-Jul-2026 17:43:26 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 328
[18-Jul-2026 17:43:30 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 328
[18-Jul-2026 17:43:30 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 328
[18-Jul-2026 17:43:31 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 328
[18-Jul-2026 17:43:31 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 328
[18-Jul-2026 17:43:31 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 328
[18-Jul-2026 17:43:32 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 328
[18-Jul-2026 17:43:33 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 328
[18-Jul-2026 17:43:36 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 328
[18-Jul-2026 17:43:36 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 328
[18-Jul-2026 17:43:37 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 328
[18-Jul-2026 17:43:38 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 328
[18-Jul-2026 17:43:38 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 328
[18-Jul-2026 17:43:39 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 328