Passive

This module provides passively refreshed page cache.

Users never have to wait for a cacheable response because cached responses do not expire. Instead, they "refresh" by performing an indirect asynchronous request to update the page cache.

This module passively supports Authcache via a reverse proxy. In response to a proxy request advertising support for passive secure sub-requests, this module takes care of instructing the proxy to retrieve the appropriate cacheable page.

Notes

If using Redirect, under Administration » Configuration » Search and metadata » URL redirects, enable the option Allow redirects to be saved into the page cache and save.

Passive Authcache reverse proxy

In order for a reverse proxy to serve Authcache-enabled pages, the proxy must be configured to:

• Passively perform a sub-request on HTTP/1.1 363 Passive Response (custom) from backend using Location and X-Passive headers.
• Indicate it supports passive requests via X-Passive-Proxy: true.

This module will take care of:

• Instructing the passive proxy server to perform a passive request.
• Return a passive response with a cache duration and the appropriate Vary header relevant to Authcache.

Sponsor

The development of this module is sponsored by The Australian National University.