...
- Database Poll – it runs a query at a predefined interval to determine if there were any changes in the tables since the last cache update.
- Oracle Change Notification Subscription – it creates a subscription to Oracle to receive notifications when a table is being changed.
...
| Info |
|---|
The Oracle Change Notification Subscription is suitable for tables which do not have a lot of updates. This is a recommendation from Oracle. We have not validated the subscriptions on tables with large amounts of updates. |
...
| Note |
|---|
There is an issue with the update of the cache in delta mode for File Cache. It should not be used before a fix is provided. File cache applies to datasets having both the properties "cache_provider": "cache-manager-file" and "cache_mode": "full". |
Configuration
The cache policies are JSON files stored in eagle/estar/tpe/dynamic/metadata/custom/cachepolicies/ folder. All files with extension .json from this folder will be loaded by the Cache Manager.
Each file will define the cache policies for a set of resources and will define which datasets have to be updated when the resource changes.
...