Oracle Video server, Руководство пользователя

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Components of Oracle Video Server and Oracle Media Net
2-26 Introducing Oracle Video Server
Oracle Media Net ORB Daemon
The Oracle Media Net ORB (object request broker) daemon receives requests for
services from clients and routes them to the appropriate servers. For servers with
multiple instances, the ORB daemon balances the load of requests across the
instances and redistributes requests if an instance fails. These clients and servers
can be located on either the same computer or on different computers on a
network. The ORB daemon manages the following details and keeps them
transparent from clients and servers:
■
where client and server applications are located
■
how to transport and convert data between different types of computers
When a service is started, it registers its name and Media Net address with the ORB
daemon.
Oracle Media Net Name Server
The Oracle Media Net name server maps the names of ORB daemons to their
Media Net addresses. When an ORB daemon is started, it registers its name and
Media Net address with the name server.
An OVS system can run only one name server.
Do not confuse the name server with the Oracle Media Net CORBA naming service
discussed later in this section.
Oracle Media Net Address Server
Each component has an Media Net address that uniquely identifies it in the Oracle
Media Net network. The Oracle Media Net address server maps Media Net
addresses to corresponding physical addresses:
■
When a client device connects to the OVS, it provides its physical address and
is assigned a Media Net address by the address server.
■
When a server process is started, it registers its physical address with the
address server and is assigned a Media Net address.
■
Before a client can send a message to the server, it contacts the address server to
find the server’s physical address.
An OVS system can run only one address server.