Undertow access log does not show request service time in Spring Boot application

Solution Verified - Updated -


An application using Undertow is configured to write an access log, with the %D or %T placeholders to indicate request time. These time fields are both displayed as "-" in the access log.


  • Red Hat Fuse 7.0
  • Application Runtimes
  • Spring Boot
  • Undertow HTTP server

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