CACHE REGISTRATION SERVICE
This section contains configurations needed for the (optional) cache announcement service. This service is provided to help cache administrators locate one another in order to join or create cache hierarchies. An announcement message is sent (via UDP) to the registration service by Squid. By default, the announcement message is NOT SENT unless you enable it with announce_period below.
All current information is processed regularly and made available on the Web at https://www.ircache.net/Cache/Tracker/.