ergonet

Ergonet Cache for WordPress is a free plugin developed by Ergonet srl, an Italian hosting company, to drastically improve the performance of a WordPress website by using a server-side page caching system (NGINX Cache or Varnish Cache).
<h3>BENEFITS</h3>
Using a server-side caching system increases your WordPress site’s performance by a minimum of 30% and up to 70%. Keep in mind that the actual improvement will also depend on your overall website optimization strategy.
<h3>WHAT IS PAGE CACHE AND HOW DOES IT WORK?</h3>
Page cache speeds up your website by storing the entire HTML of web pages directly on the web server, instantly serving them to visitors without needing to query the PHP server or the database again. Depending on your hosting plan, you can enable NGINX page cache (Equilibrio plan) or advanced RAM-based Varnish page cache (Progresso and Successo plans).
<h3>COMPATIBILITY</h3>
The Ergonet Cache plugin is compatible with all other website caching and optimization plugins, such as WP Rocket, W3 Total Cache, WO Optimize, etc. 
The Ergonet Cache plugin functions solely as a communication layer between WordPress and the cache system (Varnish or NGINX) installed on the WordPress hosting platform (any plan) and dedicated cloud hosting (Solo and Multidomain plans) offered by Ergonet, available for purchase at this link: https://www.ergonet.it/hosting/hosting-wordpress-valore 
A fundamental requirement for the plugin to work is enabling the caching system from the WebPanel (Ergonet client area available at https://webpanel.ergonet.it) by the user who purchased the shared or dedicated cloud hosting service.
<h3>HOW THE PLUGIN WORKS</h3>
Once the caching system is enabled from the Ergonet WebPanel and the Ergonet Cache plugin is installed and activated, it will work without any additional configuration. 
Cache resource updates 
Each time the webmaster updates a post or page, the plugin installed in WordPress will automatically delete the old cached version to prevent users from seeing outdated content. 
At the same time, the homepage cache will also be cleared to reflect any new articles available on it. 
Cache resource deletion 
Thanks to the automatic update and removal functionality, there is no need to manually clear the cache. Moreover, forcibly clearing the entire cache is discouraged, as it would remove all previously stored resources (pages, articles, etc.) that had been frequently accessed. 
On websites with a large amount of content, a full cache purge could also cause significant slowdowns due to WordPress needing to regenerate all requested pages or articles from scratch.
<h3>WHAT IS NOT CACHED</h3>
To ensure the plugin works efficiently, some resources and specific HTTP calls are never cached. These include:
<ul>
<li>Any page, article/resource visited by a logged-in user.</li>
<li>Any page, article/resource where a no-cache header or similar is set.</li>
<li>All requests made to the WordPress backend.</li>
<li>All data submission requests (e.g., registration forms, contact forms, comments, etc.)</li>
</ul>
<h3>HOW TO CHECK IF CACHING IS WORKING</h3>
The server-side cache system sets specific HTTP headers indicating whether the requested resource (link) is cached or not. To verify if your website is using the cache correctly, you must check for these HTTP headers. 
It’s essential to ensure you are logged out of the WordPress site you’re checking, as well as from any other WordPress site open in other browser tabs. The first step is therefore to log out from the WordPress admin area. 
Open the developer tools based on your browser:
For Firefox: Menu → Browser Tools → Browser Console
For Chrome: View → Developer Options → Developer Tools
Once the developer tools are open:
Select the “Network” tab 
In Firefox, choose the “HTML” sub-tab, in Chrome, choose “Doc” 
Refresh the website page 
Click on the first row showing the domain name or visited link (with status 200)
In the right-hand column, you’ll see the response headers. The last header refers to the cache:
<h3>VARNISH CACHE HEADER</h3>
X-VC-Cache: HIT = the resource (page) is present in cache and was served from the Varnish cache system. This means the caching system is working properly. 
X-VC-Cache: MISS = the resource (page) is NOT in cache and was generated by the WordPress application. This means the cache system was instructed by headers or custom rules not to serve the cached content to the visitor.
<h3>NGINX CACHE HEADER</h3>
x-cache-status: HIT or STALE = the resource (page) is present in cache and was served from the NGINX cache system. This means the caching system is working properly. 
x-cache-status: MISS = the resource (page) is NOT in cache and was generated by the WordPress application. This means the cache system was instructed by headers or custom rules not to serve the cached content to the visitor.
<h3>ENABLING THE CACHING SYSTEM FROM THE WEBPANEL</h3>
The NGINX caching system is enabled by default and doesn’t require any specific settings. 
To enable the Varnish caching system, we recommend checking the dedicated guide: https://docs.ergonet.it/gestione-hosting/impostazioni-cache-server/cache-varnish

Ergonet Cache

Ergonet Cache for WordPress is a free plugin developed by Ergonet srl, an Italian hosting company, to drastically improve the performance of a WordPre …

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A2 Hosting

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Boosting performance and securing your WordPress site has never been easier with the A2 Optimized WP plugin from <a href="https://www.a2hosting.com/" rel="nofollow ugc">A2 Hosting</a>. Get customized desktop and mobile performance scores for your site, including:
<ul>
<li>Server speed (Time to First Byte)</li>
<li>Page load speed (Largest Contentful Paint)</li>
<li>User perception (First Contentful Paint)</li>
<li>Visual stability (Cumulative Layout Shift)</li>
<li>Website browser speed (First Input Delay)</li>
</ul>
Using these scores, A2 Optimized WP generates specific, personalized recommendations for improving your site:
<ul>
<li>Performance</li>
<li>Security</li>
<li>Best practices compliance</li>
</ul>
With just a few clicks you’ll give your WordPress site the boost it needs with stable, industry-proven optimizations and improvements.
<a href="https://patchstack.com/database/vdp/a2-optimized-wp/" rel="nofollow ugc">Vulnerability disclosure program</a>
<h4>Performance optimizations</h4>
Our plugin is optimized to work best in the A2 Hosting environment, so items marked with an asterisk (*) are only available for sites hosted at A2 Hosting. If you are not an A2 Hosting customer, <a href="https://www.a2hosting.com" rel="nofollow ugc">join today</a>!
Page caching 
* Allows site visitors to save copies of your web pages on their device or browser. When they return to your website in the future, your site files load faster. 
* This optimization improves Time to First Byte (TTFB) and reduces bandwidth usage.
Gzip compression 
* Turns on Gzip compression to make text files smaller. 
* This optimization improves Time to First Byte (TTFB) and reduces bandwidth usage.
Redis object caching (*) 
* Stores commonly used elements such as menus, widgets, and database sets in memory. 
* This optimization improves Time to First Byte (TTFB).
Minify HTML pages 
* Removes extra spaces, tabs, comments, and line breaks from HTML pages. 
* This optimization improves First Contentful Paint (FCP) and First Input Delay (FID).
Automatic database optimizations 
* Periodically cleans MySQL databases of expired transients (a type of cached data used in WordPress) as well as trashed and spam comments. Also optimizes database tables. 
* This optimization improves Time to First Byte (TTFB) for uncached pages.
Compress images on upload (*) 
* Automatically compresses images when they are uploaded to your site. 
* This optimization improves First Contentful Paint (FCP), Largest Contentful Paint (LCP), and First Input Delay (FID).
Turbo Web Hosting (*) 
*Takes advantage of A2 Hosting’s Turbo Web Hosting platform to provide faster serving of static files, pre-compiled .htaccess files for improved performance, PHP opcode caching, and more. 
*This optimization can improve multiple benchmarks.
Use system cron instead of WordPress cron (*) 
* Replaces the WordPress virtual “cron job” with a genuine, system-defined cron job. 
* This optimization reduces the load on WordPress and ensures scheduled tasks run at precise, correct intervals.
Minify inline CSS and JavaScript 
* Removes extra spaces, tabs, comments, and line breaks from inline CSS and JavaScript. 
* This optimization improves First Contentful Paint (FCP) and First Input Delay (FID).
Disable WooCommerce AJAX Cart Fragments 
* Disables WooCommerce AJAX Cart Fragments on your homepage and enables the “redirect to cart page” option. 
* This optimization improves WooCommerce performance.
<h4>Security optimizations</h4>
Our plugin is optimized to work best in the A2 Hosting environment, so items marked with an asterisk (*) are only available for sites hosted at A2 Hosting. If you are not an A2 Hosting customer, <a href="https://www.a2hosting.com" rel="nofollow ugc">join today</a>!
Lock editing of plugins and themes from wp-admin 
* Prevents misuse of built-in editing capabilities for the WordPress admin.
Change login URL (*) 
* Changes the login page URL from the default wp-login.php to a random URL. 
* Helps prevent bots from brute-force attacking your login page.
Add CAPTCHA for comments and login (*) 
* Adds a CAPTCHA to comment forms and login pages to deter bots from posting spam comments and running brute-force attacks..
Block unauthorized XML-RPC requests 
* Rejects XML-RPC requests except for whitelisted services, such as Jetpack.
Deny direct access to configuration files 
* Displays a “403 Forbidden” error when visitors or bots try to access WordPress configuration files.
<h4>Best practices recommendations</h4>
Regenerate wp-config salts 
* Generates new values for wp-config.php salts and security keys for increased security.
Recent post limit 
*Checks the number of recent posts per page, which should be less than 15 for most sites.
RSS post limit 
* Checks the number of posts in RSS feeds, which should be less than 20 for most sites.
Recent posts showing on home page 
* Checks whether the home page displays recent posts, and offers to use a static page instead for faster performance.
Permalink structure 
* Checks that the permalink structure is configured to fully optimize page caching and get additional SEO benefits.
Unused themes 
* Checks if there are any non-default, unused themes that should be deleted.
Inactive plugins 
* Checks if there are any inactive plugins that should be deleted.
Hosted with A2 Hosting 
* Checks if your site is hosted with <a href="https://www.a2hosting.com/" rel="nofollow ugc">A2 Hosting</a> for faster page load times and more optimizations.

A2 Optimized WP – Turbocharge and secure your WordPress site

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Ergonet Cache vs A2 Optimized WP – Turbocharge and secure your WordPress site