Notify process exchanges information on cache supplies and demands with other MEDIATEX servers.
Notice: messages only contains records related to the original sender servers. When receiving a message, server forgives and replace all records previously sends by the related server. Consequently, empty message may be sent too.
Process conceptual model:
from misc (see misc): ask notify by setting a value into share memory and sending a signal.
from a remote notify process: receive a socket query providing remote cache content index.
to a remote notify process: send a socket query providing local cache content index.
Example: Servers communication between private networks