We need a setting to have different content cache based on request protocol (https vs http).

This is required if your site runs both http and https. If you build full URLs in your content area - those full URLs get cached as content cache. In that case you want to enable the setting to have 2 different content cache versions based on the request protocol.

Pull request: https://github.com/ezsystems/ezpublish-legacy/pull/1284