[CAUSEWAY-573] [WON'T FIX] To improve performance, set up caching of query results against any entities that are immutable (ie ref data, ie have ImmutableFacet on them).

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: objectstore-jdo-1.1.0, core-1.2.0
• Fix Version/s: 1.17.0
• Component/s: Core, Persistence JDO
• Assignee: Unassigned
• Reporter: Daniel Keir Haywood
• Created: 19/Oct/13 12:49
• Updated: 06/Jan/19 14:23
• Resolved: 06/Jan/19 14:23

Description

In DN, this is done using:

query.addExtension("datanucleus.query.results.cached", "true");
query.addExtension("datanucleus.query.resultCache.validateObjects", "false");

So, need to figure out how to set up these properties on queries by repositories of immutable facets. But this could probably be done transparently.

NB: for these cache results to hang around and not get garbage collected, would also need to set the global config parm:

datanucleus.cache.queryResult.type=strong

... its default value is weak.

Further info at: http://www.datanucleus.org/products/datanucleus/jdo/query_cache.html#datastoreCompilation