How do I specify cache validator?

How do I specify cache validator?

Specify a Last-Modified or ETag header to enable cache validation for the following resources: then it lists images, CSS, JS, etc. According to http://code.google.com/speed/page-speed/docs/caching.html#LeverageBrowserCaching: Set the Last-Modified date to the last time the resource was changed.

How do I fix leverage browser caching in WordPress?

Fixing Leverage Browser Caching in WordPress with the W3 Total Cache can be done by following the steps listed below:

1. Download and install the W3 Total Cache WordPress plugin.
2. Navigate to General Settings and select Enable Browser Cache.
3. Click save and navigate to Browser Cache Settings (top of the page)

How do I fix specifying a cache validator in WordPress?

Specify a cache validator Warning Fix

1. Last-Modified Header. The server usually sends this header automatically so there is no need to manually add it after.
2. ETag Header. It has a similar job as the last-modified headers since we are using both of them in cache validation.
3. Cache-Control – Specify a Cache Validator.
4. Expires.

What is cache validator?

A cache validator is defined within HTTP request and response headers and help determine if it is still valid to retrieve a file from the browser’s cache. When you specify a cache validator, such as a Last-Modified or ETag header, this helps ensure browsers are taking advantage of caching as efficiently as possible.

How can I leverage caching on my website?

You can leverage browser caching through the process of setting a long-expiry date on the static content of your website. This enables browsers to “leverage” caching and reuse these files over and over again, without having to download them. By caching these files they don’t have to be downloaded again, so your website is faster to load.

How can I enable caching in my browser?

To enable browser caching you need to edit your HTTP headers to set expiry times for certain types of files. Configuring Apache to serve the appropriate headers. Find your .htaccess file in the root of your domain. This file is a hidden file but should show up in FTP clients like FileZilla or CORE.

How to speed up WordPress with browser caching?

How To Speed Up WordPress Leveraging Browser Caching Download the plugin which can be found here Go to the Dashboard of your WordPress, then visit: Dashboard > Plugins > Add New Search for “Leverage Browser Caching” or click Upload Plugin and search the file you just downloaded Click Install Now Activate the plugin and you’re done!

Is the vary header cached in Internet Explorer?

Internet Explorer does not cache any resources whose Vary header contains fields that are not Accept-Encoding, User-Agent or Host. To ensure these resources are cached by IE, make sure to strip out any other fields from the Vary header.