wp-reverse-proxy-uploads

Allows you to specify a reverse proxy (like AWS cloudfront) to serve attachment files.

What it does

The general idea behind a reverse proxy is that instead of outputting an image tag like this:

<img src="http://yoursite.com/uploads/logo.png">

You will ouput something like this:

<img src="http://12345678.cloudfront.net/uploads/logo.png">

Behind the scenes, the cloudfront.net server will serve the logo up from its cache. If the logo isn't in its cache, it will fetch a copy from yoursite.com, cache it and serve it.

Requirements

You need to have a reverse-proxy setup to use this plugin.

Here's a guide for setting up cloudfront on AWS

Installation

1. Download the plugin and add it to the plugins directory.

2. Activate the plugin through the admin.

3. Open wp-config.php and add the following

   define('REVERSE_PROXY_BASE_URL', 'YOUR-URL-HERE');
   // do NOT include the scheme (http:// or https://)
   // Just the hostname, something like '12345678.cloudfront.net'.
   

Why bother with this?

It's an optimization.