Armeria supports writing an accessing log using logging frameworks such as Logback.
SLF4J provider can be added as a library dependency in the build.sbt file as such (where x.x.x should be replaced with the latest version):
libraryDependencies ++= Seq(
"com.greenfossil" %% "thorium" % "x.x.x" withSources(),
"ch.qos.logback" % "logback-classic" % "x.x.x"
)