If I want to put a couple of fields on every log line (username, requestId, requestIp) for a services app, is the MDC still the best way to go for Grails 3? (we used it in our Grails 2 apps) . Is there anything new with logback that's a better alternative? In Grails 3 I presume we'd use an Interceptor to populate the MDC with the relevant data, similar to what we did in Filters in G2?