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That is, in contrast to conventional loggers the \ncall stack of the to be observed methods is presented by indenting the trace messages dependent on the actual depth of the call stack. \nA distinction is made between fine granular trace messages (entering and exiting of methods, debugging output) and conventional log \nmessages (error, warning and info notifications). For production the latter ones can be redirected to a conventional logging system like \nlog4j whereas the trace messages will be discarded. Several strategies to access tracers can be employed. \nTracers can be accessed by name, can be mapped on threads and be retrieved by invoking a blocking queue. \nUnlike conventional java loggers, these tracers aren't linked with the package hierarchy but rather linked with threads.\n\nNote that the mentioned call stack contains only the to be observed methods and is therefore separate from the call stack managed by\nthe JVM. 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