=== spring.mvc.async.request-timeout ABSENT ===
{"spring.mvc.async.request-timeout":"<unset>","servletContainer":"Apache Tomcat/11.0.24","effectiveAsyncTimeoutMs":30000}
=== spring.mvc.async.request-timeout=5s ===
{"spring.mvc.async.request-timeout":"5s","servletContainer":"Apache Tomcat/11.0.24","effectiveAsyncTimeoutMs":5000}