Let’s explore more about the autoptimize cache size warning with this post. Bobcares, as a part of our WordPress Management Services, offers solutions to every query that comes our way.

What is an autoptimize cache size warning?

Autoptimize gathers all JS (and CSS) for each page that is loaded, creates the hash of that string, and then uses that hash to determine whether an optimized version is already cached. The aggregated CSS and JS are cached individually if there is a difference. Plugins that provide customized javascript variables (or CSS selectors) for each page commonly cause this behavior.

As a result, there will be a significant increase in the number of files in the cache, which will negatively affect users who will have to use their browsers to request a new, optimized CSS or JS file for each page rather than utilizing the same one on many sites.

How to fix it?

The simplest and most straightforward method is to check the boxes next to “Also collect inline JS?” and “Also aggregate inline CSS?” on the Autoptimize options page, then click “Save.” This will prevent the many CSS and JS caches that dynamic inline CSS and JSS produce.

All JS and CSS files are combined by Autoptimize into a single JS and CSS file. A web page calculates the hash of the newly combined JS and CSS file and compares it to the cached version of the files each time it loads. If a difference is discovered, CSS and JS are combined in a new cache file. There are numerous plugins that insert JS and CSS inline. So, the JS and CSS code on each page will differ. This results in hash mismatches on various pages and a large number of cache files.

By doing this action, we can resolve the “Autoptimize cache size warning” that is displayed for the website. The first step is to select “Also aggregate inline JS?” and “Also aggregate inline CSS?” from the Autoptimize options page, then uncheck them, then save. As a result of inline CSS and JSS, choosing this option will stop the plugin from building multiple JS and CSS caches. The cache size will be constrained.

Click the Save Changes and Empty Cache buttons after deselecting these choices. To restart the cache process from scratch, it will delete the cache. Because the plugin lacks automatic cache pruning, the cache size inevitably increases. To prevent the plugin from crashing your pages, do this.

How to increase the maximum cache size?

In Autoptimize, we can also increase the maximum cache size if the server has adequate free space. The functions.php file of the theme should now contain the following code.

add_filter('autoptimize_filter_cachecheck_maxsize','change_maxsize');
function change_maxsize() {
return 1010241024;
}

Use the Autoclear Autoptimize Cache plugin if you don’t want to alter code but yet want to manage the Autoptimize cache correctly. You can use this plugin to empty the Autoptimize cache whenever you wish and to specify the maximum cache size. The settings page for this plugin appears as shown in the screenshot below.

We now know how to clean the Autoptimize cache or maintain control over the Autoptimize cache.

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Conclusion

To sum up, our article explains the autoptimize cache size warning along with a simple method to fix it.