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Cache types in ConstructorMapper
Cache types to avoid expensive calculations in ConstructorInstanceFactory. Following up on suggestions from #2648.
The constructor lookup should be quick: hashCode is class name and equals compares parameters using object equality.
This is a broader change than the scope that you're trying to accomplish here, but I think the performance would be even better if we construct and cache a MethodHandle that invokes the constructor or factory method.
One last thought: it would be nice if we could see the improvement in a benchmark in benchmarks/. I think the improvement is clear enough from reading that this is not strictly required, but I think it's a good habit for us to get into to prove the benefit of such changes through repeatable benchmarks.
Updated, will run the benchmarks on the commit before the record constructor workaround, before the this commit and then after this commit and post the results to the pr. Thanks for all the ideas!
Update: added a commit to cache the types and method handle in the instance factory. Also found that the constructor benchmark was invoking a different benchmark, first commit. Should that be a separate small pr?
I'm running the benchmarks.jar locally, taking a few hours but I will post the results when it's done:)
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Here are the benchmarks:
Benchmark with the code in this pr:
# Run complete. Total time: 06:05:25
Benchmark Mode Cnt Score Error Units
BeanBindingBenchmark.batchJdbc thrpt 20 7.111 ± 0.059 ops/s
BeanBindingBenchmark.batchJdbiBean thrpt 20 6.709 ± 0.082 ops/s
BeanBindingBenchmark.batchJdbiMap thrpt 20 5.218 ± 0.175 ops/s
BeanBindingBenchmark.batchJdbiNamed thrpt 20 5.427 ± 0.160 ops/s
BeanBindingBenchmark.batchJdbiPositional thrpt 20 4.993 ± 0.057 ops/s
BeanBindingBenchmark.oneJdbc thrpt 20 20.670 ± 0.268 ops/s
BeanBindingBenchmark.oneJdbi thrpt 20 10.243 ± 0.180 ops/s
QualifiersBenchmark.eq0To0 thrpt 20 13.877 ± 0.942 ops/us
QualifiersBenchmark.eq1To1 thrpt 20 11.909 ± 0.849 ops/us
QualifiersBenchmark.eq2To2 thrpt 20 9.382 ± 0.565 ops/us
QualifiersBenchmark.eq3To3 thrpt 20 5.645 ± 0.156 ops/us
QualifiersBenchmark.eq4To4 thrpt 20 2.845 ± 0.106 ops/us
QualifiersBenchmark.mapQualifiedBean thrpt 20 0.079 ± 0.001 ops/us
QualifiersBenchmark.mapUnqualifiedBean thrpt 20 0.079 ± 0.001 ops/us
QualifiersBenchmark.neq1To0 thrpt 20 13.196 ± 1.113 ops/us
QualifiersBenchmark.neq1To1 thrpt 20 10.560 ± 1.215 ops/us
QualifiersBenchmark.neq2To2 thrpt 20 9.995 ± 1.002 ops/us
QualifiersBenchmark.neq3To3 thrpt 20 7.693 ± 1.142 ops/us
QualifiersBenchmark.neq4To4 thrpt 20 4.058 ± 0.735 ops/us
QualifiersBenchmark.qualifiedType0 thrpt 20 29.724 ± 0.196 ops/us
QualifiersBenchmark.qualifiedType1 thrpt 20 29.700 ± 0.123 ops/us
QualifiersBenchmark.qualifiedType2 thrpt 20 29.737 ± 0.040 ops/us
QualifiersBenchmark.qualifiedType3 thrpt 20 29.560 ± 0.306 ops/us
QualifiersBenchmark.qualifiedType4 thrpt 20 29.628 ± 0.179 ops/us
sqlobject.H2SqlObjectV3Benchmark.attach thrpt 40 46.903 ± 0.236 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentInsertGeneratedKeyBindBean thrpt 40 128.309 ± 1.116 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentInsertGeneratedKeyValues thrpt 40 140.087 ± 0.577 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentSelectOne thrpt 40 172.081 ± 0.337 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyBindBean thrpt 40 127.652 ± 0.507 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyValues thrpt 40 129.491 ± 1.264 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertRowCountBindBean thrpt 40 141.870 ± 1.145 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertRowCountValues thrpt 40 146.427 ± 0.599 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectSelectOne thrpt 40 151.959 ± 1.535 ops/ms
sqlobject.PGSqlObjectV3Benchmark.attach thrpt 40 38.193 ± 0.195 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentInsertGeneratedKeyBindBean thrpt 40 12.775 ± 0.133 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentInsertGeneratedKeyValues thrpt 40 12.724 ± 0.235 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentSelectOne thrpt 40 19.649 ± 0.227 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyBindBean thrpt 40 12.785 ± 0.324 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyValues thrpt 40 12.879 ± 0.244 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertRowCountBindBean thrpt 40 15.132 ± 0.283 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertRowCountValues thrpt 40 15.145 ± 0.432 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectSelectOne thrpt 40 18.895 ± 0.254 ops/ms
sqlobject.SqlObjectOperationBenchmark.classRegistered thrpt 40 3.446 ± 0.026 ops/ms
sqlobject.SqlObjectOperationBenchmark.jdbiRegistered thrpt 40 3.572 ± 0.022 ops/ms
sqlobject.SqlObjectOperationBenchmark.methodRegistered thrpt 40 3.475 ± 0.023 ops/ms
CaseInsensitiveStringEqualsBenchmark.collatorEqualsCopy avgt 5 19.548 ± 0.153 ns/op
CaseInsensitiveStringEqualsBenchmark.collatorEqualsOther avgt 5 456.382 ± 31.551 ns/op
CaseInsensitiveStringEqualsBenchmark.collatorEqualsRandomCase avgt 5 3229.864 ± 22.291 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseCopy avgt 5 10.959 ± 0.159 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseOther avgt 5 5.506 ± 0.133 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseRandomCase avgt 5 14.551 ± 0.132 ns/op
CaseInsensitiveStringEqualsBenchmark.stringEquals avgt 5 3.754 ± 0.036 ns/op
CaseInsensitiveStringEqualsBenchmark.stringNotEquals avgt 5 3.035 ± 0.073 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsCopy avgt 5 39.229 ± 0.104 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsOther avgt 5 32.375 ± 0.185 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsRandomCase avgt 5 41.720 ± 0.087 ns/op
ConstructorBenchmark.constructorMhInvoke avgt 20 7.037 ± 0.009 ns/op
ConstructorBenchmark.constructorMhInvokeArgs avgt 20 119.362 ± 1.702 ns/op
ConstructorBenchmark.constructorMhInvokeExact avgt 20 2.731 ± 0.010 ns/op
ConstructorBenchmark.constructorMhInvokeExactAsType avgt 20 2.736 ± 0.006 ns/op
ConstructorBenchmark.constructorNonfinalMhInvokeExact avgt 20 7.274 ± 0.024 ns/op
ConstructorBenchmark.jcuCheckedCreate avgt 20 1199.505 ± 43.661 ns/op
ConstructorBenchmark.jcuFindInstantiate avgt 20 21.109 ± 0.065 ns/op
EnumMapperBenchmark.mapByExactName avgt 5 264623.009 ± 2022.845 ns/op
EnumMapperBenchmark.mapByOrdinal avgt 5 225109.150 ± 2120.965 ns/op
EnumMapperBenchmark.mapByRandomCaseName avgt 5 283579.587 ± 2092.028 ns/op
Benchmark for the weak hashmap version of this pr:
# Run complete. Total time: 06:05:27
Benchmark Mode Cnt Score Error Units
BeanBindingBenchmark.batchJdbc thrpt 20 7.148 ± 0.073 ops/s
BeanBindingBenchmark.batchJdbiBean thrpt 20 6.726 ± 0.109 ops/s
BeanBindingBenchmark.batchJdbiMap thrpt 20 5.319 ± 0.061 ops/s
BeanBindingBenchmark.batchJdbiNamed thrpt 20 5.197 ± 0.117 ops/s
BeanBindingBenchmark.batchJdbiPositional thrpt 20 4.996 ± 0.056 ops/s
BeanBindingBenchmark.oneJdbc thrpt 20 20.750 ± 0.295 ops/s
BeanBindingBenchmark.oneJdbi thrpt 20 10.359 ± 0.117 ops/s
QualifiersBenchmark.eq0To0 thrpt 20 12.563 ± 1.002 ops/us
QualifiersBenchmark.eq1To1 thrpt 20 11.341 ± 0.786 ops/us
QualifiersBenchmark.eq2To2 thrpt 20 10.160 ± 0.572 ops/us
QualifiersBenchmark.eq3To3 thrpt 20 5.715 ± 0.158 ops/us
QualifiersBenchmark.eq4To4 thrpt 20 2.942 ± 0.176 ops/us
QualifiersBenchmark.mapQualifiedBean thrpt 20 0.078 ± 0.001 ops/us
QualifiersBenchmark.mapUnqualifiedBean thrpt 20 0.079 ± 0.001 ops/us
QualifiersBenchmark.neq1To0 thrpt 20 14.417 ± 0.047 ops/us
QualifiersBenchmark.neq1To1 thrpt 20 9.973 ± 0.066 ops/us
QualifiersBenchmark.neq2To2 thrpt 20 9.574 ± 1.145 ops/us
QualifiersBenchmark.neq3To3 thrpt 20 8.543 ± 0.731 ops/us
QualifiersBenchmark.neq4To4 thrpt 20 3.619 ± 0.625 ops/us
QualifiersBenchmark.qualifiedType0 thrpt 20 29.733 ± 0.058 ops/us
QualifiersBenchmark.qualifiedType1 thrpt 20 29.752 ± 0.040 ops/us
QualifiersBenchmark.qualifiedType2 thrpt 20 29.768 ± 0.033 ops/us
QualifiersBenchmark.qualifiedType3 thrpt 20 29.729 ± 0.046 ops/us
QualifiersBenchmark.qualifiedType4 thrpt 20 29.730 ± 0.050 ops/us
sqlobject.H2SqlObjectV3Benchmark.attach thrpt 40 47.138 ± 0.033 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentInsertGeneratedKeyBindBean thrpt 40 128.458 ± 0.826 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentInsertGeneratedKeyValues thrpt 40 139.702 ± 0.393 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentSelectOne thrpt 40 172.776 ± 0.638 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyBindBean thrpt 40 126.185 ± 0.873 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyValues thrpt 40 128.793 ± 1.106 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertRowCountBindBean thrpt 40 142.768 ± 0.851 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertRowCountValues thrpt 40 145.498 ± 1.890 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectSelectOne thrpt 40 149.694 ± 1.044 ops/ms
sqlobject.PGSqlObjectV3Benchmark.attach thrpt 40 38.282 ± 0.193 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentInsertGeneratedKeyBindBean thrpt 40 12.741 ± 0.311 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentInsertGeneratedKeyValues thrpt 40 13.114 ± 0.252 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentSelectOne thrpt 40 19.229 ± 0.333 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyBindBean thrpt 40 12.810 ± 0.235 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyValues thrpt 40 12.664 ± 0.157 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertRowCountBindBean thrpt 40 14.555 ± 0.473 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertRowCountValues thrpt 40 14.677 ± 0.407 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectSelectOne thrpt 40 18.681 ± 0.219 ops/ms
sqlobject.SqlObjectOperationBenchmark.classRegistered thrpt 40 3.459 ± 0.023 ops/ms
sqlobject.SqlObjectOperationBenchmark.jdbiRegistered thrpt 40 3.579 ± 0.026 ops/ms
sqlobject.SqlObjectOperationBenchmark.methodRegistered thrpt 40 3.461 ± 0.024 ops/ms
CaseInsensitiveStringEqualsBenchmark.collatorEqualsCopy avgt 5 19.627 ± 0.343 ns/op
CaseInsensitiveStringEqualsBenchmark.collatorEqualsOther avgt 5 458.300 ± 29.416 ns/op
CaseInsensitiveStringEqualsBenchmark.collatorEqualsRandomCase avgt 5 3201.441 ± 29.365 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseCopy avgt 5 10.964 ± 0.052 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseOther avgt 5 5.495 ± 0.177 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseRandomCase avgt 5 16.808 ± 12.281 ns/op
CaseInsensitiveStringEqualsBenchmark.stringEquals avgt 5 3.756 ± 0.021 ns/op
CaseInsensitiveStringEqualsBenchmark.stringNotEquals avgt 5 3.034 ± 0.050 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsCopy avgt 5 40.137 ± 0.067 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsOther avgt 5 24.571 ± 0.078 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsRandomCase avgt 5 36.714 ± 0.137 ns/op
ConstructorBenchmark.constructorMhInvoke avgt 20 7.164 ± 0.159 ns/op
ConstructorBenchmark.constructorMhInvokeArgs avgt 20 119.366 ± 1.628 ns/op
ConstructorBenchmark.constructorMhInvokeExact avgt 20 2.743 ± 0.016 ns/op
ConstructorBenchmark.constructorMhInvokeExactAsType avgt 20 2.740 ± 0.006 ns/op
ConstructorBenchmark.constructorNonfinalMhInvokeExact avgt 20 7.287 ± 0.043 ns/op
ConstructorBenchmark.jcuCheckedCreate avgt 20 1141.730 ± 5.817 ns/op
ConstructorBenchmark.jcuFindInstantiate avgt 20 21.124 ± 0.068 ns/op
EnumMapperBenchmark.mapByExactName avgt 5 266533.012 ± 692.077 ns/op
EnumMapperBenchmark.mapByOrdinal avgt 5 224933.755 ± 2743.701 ns/op
EnumMapperBenchmark.mapByRandomCaseName avgt 5 284308.595 ± 1817.295 ns/op
Benchmark before the record constructor pr:
# Run complete. Total time: 06:05:26
Benchmark Mode Cnt Score Error Units
BeanBindingBenchmark.batchJdbc thrpt 20 7.115 ± 0.093 ops/s
BeanBindingBenchmark.batchJdbiBean thrpt 20 6.752 ± 0.110 ops/s
BeanBindingBenchmark.batchJdbiMap thrpt 20 5.105 ± 0.062 ops/s
BeanBindingBenchmark.batchJdbiNamed thrpt 20 5.322 ± 0.129 ops/s
BeanBindingBenchmark.batchJdbiPositional thrpt 20 4.956 ± 0.040 ops/s
BeanBindingBenchmark.oneJdbc thrpt 20 20.865 ± 0.241 ops/s
BeanBindingBenchmark.oneJdbi thrpt 20 10.244 ± 0.065 ops/s
QualifiersBenchmark.eq0To0 thrpt 20 13.850 ± 1.071 ops/us
QualifiersBenchmark.eq1To1 thrpt 20 12.857 ± 0.072 ops/us
QualifiersBenchmark.eq2To2 thrpt 20 9.787 ± 0.706 ops/us
QualifiersBenchmark.eq3To3 thrpt 20 5.553 ± 0.173 ops/us
QualifiersBenchmark.eq4To4 thrpt 20 2.728 ± 0.201 ops/us
QualifiersBenchmark.mapQualifiedBean thrpt 20 0.078 ± 0.001 ops/us
QualifiersBenchmark.mapUnqualifiedBean thrpt 20 0.078 ± 0.001 ops/us
QualifiersBenchmark.neq1To0 thrpt 20 13.143 ± 1.159 ops/us
QualifiersBenchmark.neq1To1 thrpt 20 9.991 ± 0.023 ops/us
QualifiersBenchmark.neq2To2 thrpt 20 9.816 ± 0.146 ops/us
QualifiersBenchmark.neq3To3 thrpt 20 7.941 ± 1.334 ops/us
QualifiersBenchmark.neq4To4 thrpt 20 3.931 ± 0.690 ops/us
QualifiersBenchmark.qualifiedType0 thrpt 20 27.341 ± 3.671 ops/us
QualifiersBenchmark.qualifiedType1 thrpt 20 29.658 ± 0.235 ops/us
QualifiersBenchmark.qualifiedType2 thrpt 20 29.772 ± 0.203 ops/us
QualifiersBenchmark.qualifiedType3 thrpt 20 29.748 ± 0.039 ops/us
QualifiersBenchmark.qualifiedType4 thrpt 20 29.680 ± 0.085 ops/us
sqlobject.H2SqlObjectV3Benchmark.attach thrpt 40 46.982 ± 0.158 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentInsertGeneratedKeyBindBean thrpt 40 128.415 ± 1.119 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentInsertGeneratedKeyValues thrpt 40 140.853 ± 0.581 ops/ms
sqlobject.H2SqlObjectV3Benchmark.fluentSelectOne thrpt 40 171.517 ± 1.176 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyBindBean thrpt 40 127.278 ± 0.513 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyValues thrpt 40 128.034 ± 0.719 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertRowCountBindBean thrpt 40 142.122 ± 1.059 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectInsertRowCountValues thrpt 40 146.135 ± 1.120 ops/ms
sqlobject.H2SqlObjectV3Benchmark.sqlobjectSelectOne thrpt 40 152.841 ± 1.246 ops/ms
sqlobject.PGSqlObjectV3Benchmark.attach thrpt 40 38.234 ± 0.101 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentInsertGeneratedKeyBindBean thrpt 40 12.130 ± 0.121 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentInsertGeneratedKeyValues thrpt 40 12.722 ± 0.094 ops/ms
sqlobject.PGSqlObjectV3Benchmark.fluentSelectOne thrpt 40 19.680 ± 0.286 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyBindBean thrpt 40 12.379 ± 0.234 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertGeneratedKeyValues thrpt 40 13.135 ± 0.203 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertRowCountBindBean thrpt 40 14.837 ± 0.251 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectInsertRowCountValues thrpt 40 14.841 ± 0.421 ops/ms
sqlobject.PGSqlObjectV3Benchmark.sqlobjectSelectOne thrpt 40 18.915 ± 0.190 ops/ms
sqlobject.SqlObjectOperationBenchmark.classRegistered thrpt 40 3.473 ± 0.023 ops/ms
sqlobject.SqlObjectOperationBenchmark.jdbiRegistered thrpt 40 3.575 ± 0.025 ops/ms
sqlobject.SqlObjectOperationBenchmark.methodRegistered thrpt 40 3.456 ± 0.024 ops/ms
CaseInsensitiveStringEqualsBenchmark.collatorEqualsCopy avgt 5 19.665 ± 0.281 ns/op
CaseInsensitiveStringEqualsBenchmark.collatorEqualsOther avgt 5 459.826 ± 37.153 ns/op
CaseInsensitiveStringEqualsBenchmark.collatorEqualsRandomCase avgt 5 3218.389 ± 57.404 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseCopy avgt 5 10.963 ± 0.052 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseOther avgt 5 5.535 ± 0.067 ns/op
CaseInsensitiveStringEqualsBenchmark.equalsIgnoreCaseRandomCase avgt 5 13.270 ± 0.098 ns/op
CaseInsensitiveStringEqualsBenchmark.stringEquals avgt 5 3.769 ± 0.050 ns/op
CaseInsensitiveStringEqualsBenchmark.stringNotEquals avgt 5 3.037 ± 0.058 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsCopy avgt 5 40.020 ± 0.414 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsOther avgt 5 25.335 ± 0.029 ns/op
CaseInsensitiveStringEqualsBenchmark.toLowerCaseEqualsRandomCase avgt 5 44.283 ± 0.130 ns/op
ConstructorBenchmark.constructorMhInvoke avgt 20 7.023 ± 0.015 ns/op
ConstructorBenchmark.constructorMhInvokeArgs avgt 20 119.567 ± 1.698 ns/op
ConstructorBenchmark.constructorMhInvokeExact avgt 20 2.750 ± 0.008 ns/op
ConstructorBenchmark.constructorMhInvokeExactAsType avgt 20 2.742 ± 0.006 ns/op
ConstructorBenchmark.constructorNonfinalMhInvokeExact avgt 20 7.305 ± 0.015 ns/op
ConstructorBenchmark.jcuCheckedCreate avgt 20 1172.895 ± 22.343 ns/op
ConstructorBenchmark.jcuFindInstantiate avgt 20 21.321 ± 0.250 ns/op
EnumMapperBenchmark.mapByExactName avgt 5 262803.903 ± 1495.791 ns/op
EnumMapperBenchmark.mapByOrdinal avgt 5 224438.235 ± 585.365 ns/op
EnumMapperBenchmark.mapByRandomCaseName avgt 5 313518.257 ± 2739.219 ns/op
lmk if you prefer this version or the weak hashmap version (static cache w synchronized weak hashmap). This version caches the method handle and types directly in the instance factory.