What is Caché in WordPress?
Caching in WordPress refers to a technique that allows to temporarily store data to reduce the loading time of a website. When a user visits a page, instead of generating the content from scratch each time, WordPress uses the cache to display already processed versions. This results in improved loading speed and, consequently, a better user experience.
Some types of caches used in WordPress include:
- Page cache: Stores a full version of the generated page.
- Object cache: Saves database query results to avoid performing the same queries repeatedly.
- Browser cache: Allows browsers to store certain elements locally.
Why is it important to clear the cache?
Clearing the WordPress cache is essential to ensure that changes made to your site are reflected correctly. Whenever you update content, modify the design or install new plugins, the cache may contain old versions of your pages, which can lead to users seeing outdated information.
Some situations in which you should consider clearing the cache are:
- When you make changes to the site design.
- After updating plugins or themes.
- If users report problems viewing new content.
Methods to clear the cache in WordPress
Below are different methods for clearing cache in WordPress, both manual and automatic, depending on the tools you are using.
Clearing the cache via plugins
One of the most common methods of managing cache in WordPress is by using plugins. Below are some of the most popular plugins and how to clear cache with them:
-
W3 Total Cache:
- Go to Performance in the administration menu.
- Select Clear cache o Clear all caches. -
WP Super Cache:
- Access to WP Super Cache in the menu.
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- Click on Clear cache. -
WP Rocket:
- In the WP Rocket panel, select Clear cache.
Clearing the cache manually
If you are not using a cache plugin, you can clear the cache manually through your server. This may vary depending on the hosting provider, but generally you can do it from your server's control panel.
To clear the cache manually, follow these general steps:
- Access your server via FTP or through your hosting's file manager.
- Navigate to the folder wp-content.
- Find the cache folder (it can be named cache or have the name of the plugin you are using).
- Delete the files inside this folder.
Verification of cache deletion
It is crucial to make sure that the cache has been cleared correctly. To verify this, you can use your browser's incognito mode or clear your browser's cache. This ensures that you are viewing the most recent version of your site.
In addition, you can use online cache verification tools that will help you check if the cache has been removed correctly. Some of these services will allow you to see if your site is serving cached or updated content.
Additional tips for cache management
Here are some tips for managing cache effectively on your WordPress site:
- Configure the cache expiration: Setting an appropriate expiration time for the cache can help keep your content fresh.
- Use the option to automatically purge cache: Many plugins offer the option to automatically purge the cache when publishing or updating entries.
- Check plugin compatibility: Make sure the caching plugins you use are compatible with each other and with your WordPress theme.
Common errors in cache management
Managing the cache can lead to confusion and errors if not done correctly. Some of the most common errors include:
- Do not clear the cache after making changes: This can lead to visitors seeing outdated information.
- Delete the wrong cache: Make sure you delete the cache of the correct plugin and do not delete other important files.
- Forget the browser cache: Sometimes, the problem may be in the users' local browser cache.
