StandardServletMultipartResolver.resolveMultipart invoked multiple times for same request
The following should be analyzed because off hand it seems inefficient. Multipart requests are resolved multiple times for handling url mappings which appears to be real inefficient.
https://github.com/grails/grails-core/blob/6f9d173e0af20a852971aad78a42cc42bba7fd80/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/mvc/UrlMappingsHandlerMapping.groovy#L157
https://github.com/grails/grails-core/blob/6f9d173e0af20a852971aad78a42cc42bba7fd80/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/mvc/GrailsControllerUrlMappings.java#L45-L67
https://github.com/grails/grails-core/blob/6f9d173e0af20a852971aad78a42cc42bba7fd80/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/mvc/AbstractGrailsControllerUrlMappings.groovy#L185-L203
-> DefaultUrlMappingInfo.tryMultipartParams is invoked for every UrlMappingInfo because of the call to getActionName()
https://github.com/grails/grails-core/blob/6f9d173e0af20a852971aad78a42cc42bba7fd80/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/AbstractUrlMappingInfo.java#L70-L102
https://github.com/grails/grails-core/blob/6f9d173e0af20a852971aad78a42cc42bba7fd80/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/DefaultUrlMappingInfo.java#L197-L205
due to checkDispatchAction(webRequest.getCurrentRequest());
https://github.com/grails/grails-core/blob/6f9d173e0af20a852971aad78a42cc42bba7fd80/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/DefaultUrlMappingInfo.java#L215-L221