[logback-user] Dynamic (per Marker ?) file appender

Hi, Would it be feasable to have a file appender that would log to a file dynamically created based on a Marker ? The use case I have in mind is I "launch jobs", and would like each job to have its own logging file (identified by an incremental job number for example). Would the use of marker to do so be feasable, be a good idea, imply to create a new appender class, be totally dumb :), ...? Thanks for your comments, Franck