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Kevin Worthington
Asked: 2014-02-09 18:33:18 +0800 CST

Nginx no-cache header for ?random query string

  • 772

On an Nginx install using WordPress with the Jetpack plugin, it has the ability to use domainname.com/?random to redirect to a random blog post.

The problem is that this page is getting cached and after visiting the random link once. It will not randomly redirect anymore - you simply get the same page as the first time random was clicked.

To remedy this, I tried:

location = /\?random {
      expires -1;
}

and other variations like:

if ($arg_random){
      expires -1;
}

Those don't seem to obey the rules.

I'm grateful for any help. Thanks.

nginx

1 Answers

  1. Best Answer

    Inspired by Michael Hampton's comment, I dug deeper.

    It made me realize that W3 Total Cache is probably to blame for caching ?random links on a per-user basis.

    In the W3TC plugin's settings I added "?random" (no quotes) to the "Cache exception list" on the Page Cache setting page (/wp-admin/admin.php?page=w3tc_pgcache)

    Thanks for the great question which led to mer discovering the answer, Michael.

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