How to enable mod_expires in Digital Ocean?

I have been asked to enable mod_expires in digital ocean for header caching as well as browser caching. I don’t know where to look and enable it. If someone kind enough to share me document link or any guidance would be appreciated.

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Site Moderator
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February 12, 2023

Hey @243261243130244e585741572f7544,

First you should check if it’s already enabled. To do so, you can run the following on CentOS

  1. httpd -M | grep expires

If nothing appears as output then you don’t have it enabled. Another way to verify it is via httpd.conf file, open apache configuration file in your favorite text editor application (Vi/ViM, Nano etc) and search for following line. If successfully found, then your Apache has mod_expires enabled.

LoadModule expires_module modules/

For Ubuntu system, we need to use a2enmod utility to enable Apache modules, simply run following command to enable expires module on Ubuntu.

a2enmod expires

Once done, we need to restart apache for this change to take effect.

/etc/init.d/apache2 restart

Now you have it enabled however you’ll need to configure it for extensions you need to cache. Now that’s entierly up to your preferences but there are different settings for that. You can check how to configure .jpeg or similar extenions.

Hope that helps.

Site Moderator
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September 1, 2022

Hello @kunalchauhan

mod_expires should come with the default Apache installation, but you can check if the module is both installed and loaded using these commands

  1. apachectl -M | grep expires

If mod_expires is not enabled or installed you can run the following command to install mod_expires on Ubuntu/Debian systems

  1. sudo a2enmod mod_expires

Then you need to restart Apache

  1. service apache2 restart

That’s it, you now have mod_expires enabled.

Hope that this helps!

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