RAP infrastructure supports high-speed transfer of derived data into the RAPStore, with minimal latency.
Applications store derived data in the RAPCache. The derived data (for example, calculation results) is stored in lookup tables that are separate from the market data tables. To preserve historical records, transfer derived data to the RAPStore.
Transfer rules determine when derived and market data is transferred. Administrators create multiple transfer rules to specialize derived data management. There are two types of transfer rule: scheduled and cache-full.
Truncation rules govern when derived and market data is deleted. Rules specify which of the oldest data to delete. There are two types of truncation rules: scheduled and cache-full.
Transfer rules and truncation rules are defined in the OpsConsole.
In high-volume systems, the RAPCache subscriber and RAPStore subscriber machines can be so busy processing incoming message flow that there is no capacity left to process file transfers. For efficient high-volume operation, configure separate machines to process data transfers.
For information on administering transfers and truncations, see the Operations Console Users Guide.