It might greatly help to debug issues if there would be a possibility to dump configuration cache for server and proxy in textual format.

Two ways have been thought of: (a) create a runtime control option, which would send a signal to configuration syncer, which would dump the cache to the log, and (b) create a regular command line option, which would make the server attach to the running server's shared memory and dump that to stdout instead.

Option (b) might be more convenient to parse and handle.