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TripTimes A1'Timetable CTimetable BTimetableSnapshotMapTripPattern -> TimetablearrivalTimes per stopGARBAGE COLLECTED SNAPSHOT SLIVE SNAPSHOT TTimetableSnapshotManagerTimetableSnapshot'MapTripPattern -> TimetableTimetable A'1:(N-1)List<TripTimes>1:(N-1)departureTimes' per stopBUFFERTimetableSnapshot''1:(N-2)MapTripPattern -> TimetableTripTimes B3'Timetable B'List<TripTimes>1:(N-1)XTripTimes A1TripTimes A3Trip A3TripTimes A2Trip A2List<TripTimes>Timetable AList<TripTimes>departureTimes per stopRequestsThread 1IdleThread 2IdleThread 3RoutingdepartureTimes' per stoparrivalTimes' per stopTrip A1
