I have read about the Mapped Diagnostic Context, and although useful, the log statements from different threads still appear interspersed in the output. What I would like is to have all log statements from a thread outout consecutively when that thread is done (and I know what and when "done" is) For example : Thread A starts at time T-Astart, performs logging at various points, and is done at T-Adone. Before A is done, at time T-Bstart (T-Adone < T-Bstart < T-Adone) another thread B starts processing, does the same kind of logging and finishes at T-Bdone. Now, I would like all logging statements from thread A to appear before the logging statements from Thread B, and not interspersed as the MDC examples I have seen. Is this kind of deferred, grouped logging possible with logback ? -- View this message in context: http://logback.10977.n7.nabble.com/Is-grouped-deferred-log-statements-from-s... Sent from the Users mailing list archive at Nabble.com.