We're now caching meta information about controller methods and their parameters more aggressively to avoid repeated lookups of such information via reflection. We're also keeping reference to proxy classes generated through CGlib around to avoid costly regeneration.
Note that the main culprit causing the drastic numbers reported in the original ticket stem from a problem in Spring's TypeDescriptor which triggers costly equals(…) comparisons on synthesized annotations [0].
Removed conditional reflective lookup of DefaultParameterNameDiscoverer as it's now present by definition.
[0] https://jira.spring.io/browse/SPR-14926
4838e9f40c