- Harry's application will need different resources in different instances.
Games consoles may be a significant platform in Japan long before
they become popular in South Africa.
- Harry's game needs to evolve smoothly and efficiently as popularity
of the game and the various platforms change. Mobile telephony bases
need to move to the right location to suit changing demand; games
console usage will not grow predictably, but he still needs to be
responsive.
- A subsystem running on a hosting service. The subsystem
may comprise many netlets. The agency which started the subsystem
is not shown.
- A netlet running on a hosting service, under the
management of an application controller. The netlet is running on
a particular node, and using a resource supplied by that node under
the management of the hosting service.
- The same situation as in figure
,
except that the node isn't important and isn't shown.
- A Netlet using a service. The access point is downloaded
and runs under the same hosting service as the consumer netlet. The
service is using a resource from the hosting service. It has been
passed that resource by the consumer netlet, through the service interface.
- The same situation as in figure
,
in an abbreviated notation.
- A service being provided from provider to consumer.
There may be multiple service connections and access points involved
in the connection.
- A typical Jtrix service style application
- Reusing an exiting resource if possible.
- Functional Overview of Harry's Game
- Initial deployment of Harry's Game
- Migration to a new HTTP service. The new
service can run in parallel to the old during the migration process.
Jim Chapman
2001-08-16