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Database subscription in action

The video below shows off a feature introduced in Polyhedra 9.0: partial replication by means of database subscription. Basically a stand-alone or fault-tolerant database can set up a subscription on other databases and retrieve information from them which is stored in tables in the subscribing database - basically, a live cache. If the connection is lost, the cache is preserved until the connection can be re-established, at which time the subscriptions are renewed and the cache brought up to date.

There is a separate technical paper giving details of this demo, should you be interested!