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Changes to Spring Data Commons

Some observations were made from TRACE logging in the petclinic. Instead of component scanning we could use spring.factories for detecting "plugin" behaviour in Spring Data Commons. These changes were made and the petclinic re-tested.

Before:

 PetclinicBenchmark.devtoolsRestart          avgt   10  1.387 ± 0.399   s/op
 PetclinicBenchmark.explodedJarMain          avgt   10  5.491 ± 0.357   s/op
 PetclinicBenchmark.fatJar                   avgt   10  6.130 ± 0.271   s/op
 PetclinicBenchmark.noverify                 avgt   10  5.430 ± 0.217   s/op

After:

Benchmark                           Mode  Cnt  Score   Error  Units
PetclinicBenchmark.devtoolsRestart  avgt   10  1.261 ± 0.188   s/op
PetclinicBenchmark.explodedJarMain  avgt   10  5.088 ± 0.207   s/op
PetclinicBenchmark.fatJar           avgt   10  5.860 ± 0.244   s/op
PetclinicBenchmark.noverify         avgt   10  5.318 ± 0.180   s/op

The changes are in RepositoryConfigurationDelegate and SpringDataWebConfigurationImportSelector (where the component scan is used in each case). The difference is perceptible, but doesn’t deliver the hoped for 800ms improvement. It is now available using spring-data-releasetrain.version=Ingalls-BUILD-SNAPSHOT.