Benchmark (using the excellent JMH harness) showing ResolvableType performance issue between Spring 3.1.x and later versions based on the same Spring Flex SpringPropertyProxy usage.
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Benchmark                                             Mode   Samples        Score  Score error    Units
o.s.b.ResolvableTypeBenchmark.resolvableTypeCache     avgt         5     1476,165       91,530    us/op
Benchmark                                             Mode   Samples        Score  Score error    Units
o.s.b.ResolvableTypeBenchmark.resolvableTypeCache     avgt         5    47520,626     6376,711    us/op