Varnish Caching 1.8.3
Does Varnish Caching work with WordPress 6.8.3 and PHP 8.1.12? A smoke test was performed on .
Summary
Errors
| 1 | PHP warnings |
| 3 | PHP deprecation warnings |
| No JavaScript exceptions | |
| All test pages loaded successfully | |
| No resource errors |
Performance
Memory usage: 60.02 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 | 6.8.3 |
|---|---|
| PHP version | 8.1.12 |
| MySQL version | 10.6.10 |
| PHP memory limit | 512M |
Plugin Info
| Last updated | |
|---|---|
| Active installs | 1,000+ |
| WordPress.org page | https://wordpress.org/plugins/vcaching/ |
| Badges |
|
Pages 6
Plugins ‹ Test site — WordPress
| URL | /wp-admin/plugins.php?plugin_status=all&paged=1&s |
|---|---|
| Requested URL | /wp-admin/plugins.php?action=activate&plugin=vcaching%2Fvcaching.php&plugin_status=all&paged=1&s&_wpnonce=7167cfb3b6 |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 0.309 s |
| Memory usage | 3.58 MiB |
| JS errors | None |
| Resource errors | None |
Varnish Caching
| URL | /wp-admin/admin.php?page=vcaching-plugin |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.175 s |
| Memory usage | 3.55 MiB |
| JS errors | None |
| Resource errors | None |
Varnish Caching → Console
| URL | /wp-admin/index.php?page=vcaching-plugin&tab=console |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 0.146 s |
| Memory usage | 3.55 MiB |
| JS errors | None |
| Resource errors | None |
Varnish Caching → Statistics
| URL | /wp-admin/index.php?page=vcaching-plugin&tab=stats |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 0.137 s |
| Memory usage | 3.55 MiB |
| JS errors | None |
| Resource errors | None |
Varnish Caching → VCLs Generator
| URL | /wp-admin/index.php?page=vcaching-plugin&tab=conf |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 0.160 s |
| Memory usage | 3.55 MiB |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.206 s |
| Memory usage | 3.51 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.337 s | 0.299 s | -0.038 s | 3.51 MiB | 3.57 MiB | + 63.05 KiB |
| /wp-admin/edit.php | 0.202 s | 0.199 s | -0.003 s | 3.57 MiB | 3.66 MiB | + 86.2 KiB |
| /wp-admin/post-new.php | 0.788 s | 0.639 s | -0.149 s | 6.06 MiB | 6.13 MiB | + 66.24 KiB |
| /wp-admin/upload.php | 0.776 s | 0.291 s | -0.485 s | 3.52 MiB | 3.57 MiB | + 44.41 KiB |
| /wp-admin/options-writing.php | 0.209 s | 0.351 s | +0.142 s | 3.5 MiB | 3.55 MiB | + 48.4 KiB |
| /wp-admin/media-new.php | 0.255 s | 0.272 s | +0.017 s | 3.49 MiB | 3.55 MiB | + 56.59 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.355 s | 0.188 s | -0.167 s | 3.5 MiB | 3.57 MiB | + 67.27 KiB |
| /wp-admin/post-new.php?post_type=page | 0.614 s | 0.613 s | -0.001 s | 6.05 MiB | 6.11 MiB | + 61.77 KiB |
| /wp-admin/options-discussion.php | 0.267 s | 0.374 s | +0.107 s | 3.5 MiB | 3.55 MiB | + 44.9 KiB |
| /wp-admin/edit-comments.php | 0.201 s | 0.201 s | +0.000 s | 3.52 MiB | 3.57 MiB | + 44.4 KiB |
| / | 0.302 s | 0.202 s | -0.100 s | 3.43 MiB | 3.51 MiB | + 77.02 KiB |
| Average | 0.391 s | 0.330 s | -0.062 s | 3.97 MiB | 4.03 MiB | + 60.02 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.
| Language | % | Lines of code | Comment lines | Files | |
|---|---|---|---|---|---|
| PHP | 77.5% | 976 | 52 | 3 | |
| PO File | 13.7% | 172 | 81 | 2 | |
| reStructuredText | 8.9% | 112 | 0 | 1 | |
| Total | 1,260 | 133 | 6 | ||
PHP Code Analysis | More results »
| Lines of code | 963 |
|---|---|
| Total complexity | 202 |
| Median class complexity | 101.0 |
| Median method complexity | 1.0 |
| Most complex class | VCaching |
| Most complex function | VCaching::init() |
| Classes | 2 |
|---|---|
| Methods | 54 |
| 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.
No new entries found.
PHP Error Log 4 lines
[03-Oct-2025 07:26:44 UTC] PHP Deprecated: strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
[03-Oct-2025 07:26:44 UTC] PHP Deprecated: strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
[03-Oct-2025 07:26:44 UTC] PHP Warning: Undefined array key "info" in /wp-content/plugins/vcaching/vcaching.php on line 618
[03-Oct-2025 07:26:45 UTC] PHP Deprecated: strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41