What if the centralized ProxyPass servers are unreachable?
The ProxyPass client software will still work, and no, your Apache server will not stop handling authenticated requests. If the remote ProxyPass servers are unreachable (e.g. network outage), your Apache module will recognize this and stop querying the centralized servers until they are again reachable. During this time when the centralized servers are unreachable, the client module will still compare for proxies against its own internal cache. Furthermore, it will continue to block suspect requests for the IP-burst, username-burst, password sharing, and bandwidth policy violations. Most important of all, however, is the fact that browsers will -not see any network lag or response slowdown when the centralized servers are out of touch. In short, the browser experience will -not- be impacted.
