[jira] [Created] (ISIS-654) Provide a request-scoped QueryResultsCache service, as a technique for performance tuning.

["Dan Haywood (JIRA)" <ji...@apache.org>]

Dan Haywood created ISIS-654:
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             Summary: Provide a request-scoped QueryResultsCache service, as a technique for performance tuning.
                 Key: ISIS-654
                 URL: https://issues.apache.org/jira/browse/ISIS-654
             Project: Isis
          Issue Type: New Feature
          Components: Core
    Affects Versions: core-1.3.0
            Reporter: Dan Haywood
            Assignee: Dan Haywood
            Priority: Minor
             Fix For: core-1.4.0


With Isis, the emphasis is on behaviourally complete domain objects.  However, this can result in "naive" algorithms whereby the same code is revisited mulitple times, eg in a tight loop  If that code makes repository queries, then a performance problem is likely to result.

This ticket exploits the request-scoping support introduced in ISIS-652, and provides a service that acts as a cache of query results.  This enables that inner code to look in the cache first.



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