LinkedList remains in place where a List is likely to remain empty or single-element (in order to avoid unused capacity).
Issue: SPR-17037
(cherry picked from commit 9c08a48)
Prior to this commit, resolving an argument for a WebFlux controller
that's missing from the request and not required by the handler would
throw a NullPointerException in some cases.
This involves the conversion of the parameter (a `String` parameter type
might not trigger this behavior) and sending a `null` within a reactive
stream, which is illegal per the RS spec.
We now rely on a `Mono.justOrEmpty()` to handle those specific cases.
Issue: SPR-17050
(Cherry-picked from a7f97a1669)
The parseLocale method also turns an empty locale into null now, compatible with parseLocaleString behavior.
Includes tests for parsing all available locales on the JVM, checking toString/toLanguageTag equality between parsed and original locale.
Issue: SPR-7598
Issue: SPR-16651
(cherry picked from commit cab35aa)
The ability to request to encode before `build()`, and more importantly
before expanding, allows stricter encoding to be applied to URI vars
and consequently to neutralize the effect of characters with reserved
meaning in a URI.
Issue: SPR-17039
- hooks to check expired sessions in both create and retrieve.
- maxSessions limit on the total number of sessions.
- getSessions method for management purposes
- removeExpiredSessions public API
Issue: SPR-17020, SPR-16713
Includes specific fine-tuning of ProtobufHttpMessageConverter and JAXB2 based message converters, as well as revised javadoc for abstract base classes.
Issue: SPR-16995
Includes an efficient implementation of isEmpty(), not relying on a full entry count but rather backing out once a non-empty hash segment has been found.
Issue: SPR-16994
Includes a clarification of ThreadPoolExecutor configuration options and a note on early AsyncConfigurer initialization.
Issue: SPR-16944
Issue: SPR-16945
(cherry picked from commit d58c09b)
