FastCache by host.it 1.5.10

Does FastCache by host.it work with WordPress 6.9.1 and PHP 8.1.12? A smoke test was performed on .

Summary

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

Memory usage: 221.25 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 version6.9.1
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 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=fastcache-by-host-it%2Ffastcache.php&plugin_status=all&paged=1&s&_wpnonce=5529c8dab2
Aspect after-activation
HTTP status 200
Load time 0.347 s
Memory usage 3.94 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 0.692 s
Memory usage 4.98 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 0.197 s
Memory usage 4.32 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 0.861 s
Memory usage 6.58 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 0.641 s
Memory usage 6.59 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.417 s0.348 s-0.069 s3.78 MiB3.99 MiB+ 213.78 KiB
/wp-admin/edit.php0.349 s0.431 s+0.082 s3.78 MiB4.04 MiB+ 259.92 KiB
/wp-admin/post-new.php0.832 s0.822 s-0.010 s6.31 MiB6.59 MiB+ 290.67 KiB
/wp-admin/upload.php0.623 s0.413 s-0.210 s3.74 MiB3.92 MiB+ 188.72 KiB
/wp-admin/options-writing.php0.325 s0.302 s-0.023 s3.71 MiB3.9 MiB+ 193.02 KiB
/wp-admin/media-new.php0.502 s0.321 s-0.181 s3.7 MiB3.9 MiB+ 201.22 KiB
/wp-admin/edit-tags.php?taxonomy=category0.313 s0.323 s+0.010 s3.72 MiB3.92 MiB+ 211.58 KiB
/wp-admin/post-new.php?post_type=page0.808 s0.636 s-0.172 s6.3 MiB6.57 MiB+ 284.16 KiB
/wp-admin/options-discussion.php0.374 s0.301 s-0.073 s3.71 MiB3.9 MiB+ 189.21 KiB
/wp-admin/edit-comments.php0.316 s0.310 s-0.006 s3.74 MiB3.92 MiB+ 189.02 KiB
/0.270 s0.209 s-0.061 s4.11 MiB4.32 MiB+ 212.48 KiB
Average 0.466 s0.401 s-0.065 s4.24 MiB4.45 MiB+ 221.25 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
PO File
JavaScript
Language % Lines of code Comment lines Files
PHP71.0%16,9175,671128
CSS11.7%2,7973727
PO File8.9%2,1281,5871
JavaScript8.2%1,95933917
HTML0.1%2003
SVG0.0%101
Total 23,822 7,969 157

PHP Code Analysis | More results »

Lines of code 16,608
Total complexity 3,289
Median class complexity 17.0
Median method complexity 1.0
Most complex class FastCache\Core\SimpleHtmlDomNode
Most complex function FastCache\Core\LightImages::processImageNodes()
Classes 101
Methods 953
Functions 9

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"
        }
    }
}

PHP Error Log 1 lines

[09-Feb-2026 14:21:49 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 674
See also: All tests for this plugin, How to Hide FastCache by host.it Admin Menus and More