Without support for the 'appender-ref' in the Groovy configuration you can't really use Groovy configuration for any async appender. For example, the 'reactor-logback' project https://github.com/reactor/reactor/tree/master/reactor-logback
Without support for the 'appender-ref' in the Groovy configuration you can't really use Groovy configuration for any async appender. For example, the 'reactor-logback' project https://github.com/reactor/reactor/tree/master/reactor-logback