FastCache by host.it 1.6.7

Does FastCache by host.it work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
1PHP notices
1PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 249.53 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 version6.9.4
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 300+
WordPress.org page https://wordpress.org/plugins/fastcache-by-host-it/
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Pages 6

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=fastcache-by-host-it%2Ffastcache.php&plugin_status=all&paged=1&s&_wpnonce=31559e70b8
Aspect after-activation
HTTP status 200
Load time 1.594 s
Memory usage 3.98 MiB
JS errors None
Resource errors None

Settings → FastCache Settings

Page screenshot: Settings → FastCache Settings
URL /wp-admin/options-general.php?page=fastcache
Aspect menu-item
HTTP status 200
Load time 0.890 s
Memory usage 5.14 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 0.292 s
Memory usage 4.34 MiB
JS errors None
Resource errors None

Add Page ‹ Test site — WordPress

Page screenshot: Add Page ‹ Test site — WordPress
URL /wp-admin/post-new.php?post_type=page
Aspect new-meta-boxes
HTTP status 200
Load time 0.720 s
Memory usage 6.6 MiB
JS errors None
Resource errors None

Add Post ‹ Test site — WordPress

Page screenshot: Add Post ‹ Test site — WordPress
URL /wp-admin/post-new.php
Aspect new-meta-boxes
HTTP status 200
Load time 0.675 s
Memory usage 6.6 MiB
JS errors None
Resource errors None

Dashboard ‹ Test site — WordPress

Page screenshot: Dashboard ‹ Test site — WordPress
URL /wp-admin/index.php
Aspect new-meta-boxes
HTTP status 200
Load time 0.619 s
Memory usage 4.02 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.462 s0.384 s-0.078 s3.78 MiB4.02 MiB+ 246.7 KiB
/wp-admin/edit.php0.353 s0.460 s+0.107 s3.79 MiB4.07 MiB+ 291.3 KiB
/wp-admin/post-new.php0.785 s0.886 s+0.101 s6.31 MiB6.61 MiB+ 305.55 KiB
/wp-admin/upload.php0.438 s0.410 s-0.028 s3.74 MiB3.96 MiB+ 223.6 KiB
/wp-admin/options-writing.php0.330 s0.301 s-0.029 s3.72 MiB3.94 MiB+ 227.91 KiB
/wp-admin/media-new.php0.528 s0.490 s-0.038 s3.71 MiB3.94 MiB+ 236.1 KiB
/wp-admin/edit-tags.php?taxonomy=category0.348 s0.305 s-0.043 s3.72 MiB3.96 MiB+ 246.46 KiB
/wp-admin/post-new.php?post_type=page0.750 s0.683 s-0.067 s6.3 MiB6.59 MiB+ 299.04 KiB
/wp-admin/options-discussion.php0.386 s0.326 s-0.060 s3.72 MiB3.94 MiB+ 224.09 KiB
/wp-admin/edit-comments.php0.378 s0.349 s-0.029 s3.74 MiB3.96 MiB+ 223.9 KiB
/0.301 s0.220 s-0.081 s4.12 MiB4.34 MiB+ 220.2 KiB
Average 0.460 s0.438 s-0.022 s4.24 MiB4.48 MiB+ 249.53 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
CSS
Language % Lines of code Comment lines Files
PHP72.0%19,3356,079136
CSS16.0%4,2934018
JavaScript7.3%1,97434017
PO File4.6%1,2411,6211
HTML0.1%2003
SVG0.0%101
Total 26,864 8,441 166

PHP Code Analysis | More results »

Lines of code 19,431
Total complexity 3,824
Median class complexity 18.5
Median method complexity 1.0
Most complex class FastCache\Core\SimpleHtmlDomNode
Most complex function FastCache\Core\LightImages::processImageNodes()
Classes 110
Methods 1,065
Functions 33

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.

Options wp_options 1

Meta Boxes

{
    "page": {
        "fastcache": {
            "title": "Host Caching",
            "context": "side"
        }
    },
    "post": {
        "fastcache": {
            "title": "Host Caching",
            "context": "side"
        }
    },
    "dashboard": {
        "fastcache_dashboard_widget": {
            "title": "FastCache 1.6.7",
            "context": "normal"
        }
    }
}

PHP Error Log 2 lines

[14-Apr-2026 18:03:12 UTC] PHP Deprecated:  Automatic conversion of false to array is deprecated in /wp-content/plugins/fastcache-by-host-it/src/Admin/Settings/Renderer/Setting.php on line 832
[14-Apr-2026 18:03:13 UTC] PHP Notice:  Function _load_textdomain_just_in_time was called <strong>incorrectly</strong>. Translation loading for the <code>fastcache</code> domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the <code>init</code> action or later. Please see <a href="https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 6.7.0.) in /wp-includes/functions.php on line 6131
See also: All tests for this plugin, How to Hide FastCache by host.it Admin Menus and More