CustomBooleanEditor is configured with allowEmpty=false (SPR-13010) fixed infinite loop in PatternMatchUtils (SPR-12971) fixed infinite loop when CronSequenceGenerator constructor is called with invalid increments MVC resource at root level not considered "under location" (SPR- 12747) fixed deadlock publishing event while creating listener bean (SPR-12739) fixed NPE in ServletUriComponentsBuilder#initFromRequest be parsed with single quotes (-> Android 2.x) (SPR-8917) * DispatcherPortlet no longer forwards event exceptions to the render phase by default (SPR-9287) * fixed Portlet request mapping priorities in

CustomBooleanEditor is configured with allowEmpty=false (SPR-13010) fixed infinite loop in PatternMatchUtils (SPR-12971) fixed infinite loop when CronSequenceGenerator constructor is called with invalid increments MVC resource at root level not considered "under location" (SPR- 12747) fixed deadlock publishing event while creating listener bean (SPR-12739) fixed NPE in ServletUriComponentsBuilder#initFromRequest be parsed with single quotes (-> Android 2.x) (SPR-8917) * DispatcherPortlet no longer forwards event exceptions to the render phase by default (SPR-9287) * fixed Portlet request mapping priorities in

CustomBooleanEditor is configured with allowEmpty=false (SPR-13010) fixed infinite loop in PatternMatchUtils (SPR-12971) fixed infinite loop when CronSequenceGenerator constructor is called with invalid increments MVC resource at root level not considered "under location" (SPR- 12747) fixed deadlock publishing event while creating listener bean (SPR-12739) fixed NPE in ServletUriComponentsBuilder#initFromRequest be parsed with single quotes (-> Android 2.x) (SPR-8917) * DispatcherPortlet no longer forwards event exceptions to the render phase by default (SPR-9287) * fixed Portlet request mapping priorities in

CustomBooleanEditor is configured with allowEmpty=false (SPR-13010) fixed infinite loop in PatternMatchUtils (SPR-12971) fixed infinite loop when CronSequenceGenerator constructor is called with invalid increments MVC resource at root level not considered "under location" (SPR- 12747) fixed deadlock publishing event while creating listener bean (SPR-12739) fixed NPE in ServletUriComponentsBuilder#initFromRequest be parsed with single quotes (-> Android 2.x) (SPR-8917) * DispatcherPortlet no longer forwards event exceptions to the render phase by default (SPR-9287) * fixed Portlet request mapping priorities in

CustomBooleanEditor is configured with allowEmpty=false (SPR-13010) fixed infinite loop in PatternMatchUtils (SPR-12971) fixed infinite loop when CronSequenceGenerator constructor is called with invalid increments MVC resource at root level not considered "under location" (SPR- 12747) fixed deadlock publishing event while creating listener bean (SPR-12739) fixed NPE in ServletUriComponentsBuilder#initFromRequest be parsed with single quotes (-> Android 2.x) (SPR-8917) * DispatcherPortlet no longer forwards event exceptions to the render phase by default (SPR-9287) * fixed Portlet request mapping priorities in

applications do not block. Therefore, non-blocking servers use a small, fixed-size thread pool (event loop workers) to handle requests.  “To scale” and “small number of threads” may sound contradictory (blocking) I/O and servlet 3.1 (non-blocking) I/O usage. • The reactive WebClient operates in event loop style. So you can see a small, fixed number of processing threads related to that (for example Netty connector). However, if Reactor Netty is used for both client and server, the two share event loop resources by default. • Reactor and RxJava provide thread pool abstractions, called schedulers

singleton processing to not fail for manually registered null instances * fixed ApplicationContext event processing for repeated invocations to non- singleton listener beans * optimized @Bean error messages end of the event phase * Portlet AbstractController consistently uses session mutex if "synchronizeOnSession" is active * PortletWrappingController supports Portlet 2.0 resource and event requests as ConversionExceptions * DefaultListableBeanFactory checks for alias circle on registerAlias (avoiding endless loop) * ConversionService is able to apply Converters to interface-based array elements * ConversionService

end of the event phase * Portlet AbstractController consistently uses session mutex if "synchronizeOnSession" is active * PortletWrappingController supports Portlet 2.0 resource and event requests as ConversionExceptions * DefaultListableBeanFactory checks for alias circle on registerAlias (avoiding endless loop) * ConversionService is able to apply Converters to interface-based array elements * ConversionService beans as well * generic ApplicationListener event type gets detected through AOP proxy as well * ApplicationListeners will only be executed once per event (even for scripted objects) * ApplicationListeners

singleton processing to not fail for manually registered null instances * fixed ApplicationContext event processing for repeated invocations to non- singleton listener beans * optimized @Bean error messages end of the event phase * Portlet AbstractController consistently uses session mutex if "synchronizeOnSession" is active * PortletWrappingController supports Portlet 2.0 resource and event requests as ConversionExceptions * DefaultListableBeanFactory checks for alias circle on registerAlias (avoiding endless loop) * ConversionService is able to apply Converters to interface-based array elements * ConversionService

singleton processing to not fail for manually registered null instances * fixed ApplicationContext event processing for repeated invocations to non- singleton listener beans * optimized @Bean error messages end of the event phase * Portlet AbstractController consistently uses session mutex if "synchronizeOnSession" is active * PortletWrappingController supports Portlet 2.0 resource and event requests as ConversionExceptions * DefaultListableBeanFactory checks for alias circle on registerAlias (avoiding endless loop) * ConversionService is able to apply Converters to interface-based array elements * ConversionService