The Unidata Local Data Manager (LDM) at age 11

Since its initial release in 1994, the Unidata Local Data Manager (LDM) has been adopted by numerous entities and agencies to distribute and process data in near real-time via the Internet. User's of the LDM include universities engaged in geoscience research and education in the US, Canada, Costa Rica, Brazil, Argentina, and Italy. Non-educational entities include NOAA/NWS, NASA, USGS, the US Army Corps of Engineers, the US Navy, and governmental entities in Brazil, South Korea, Vietnam, and Taiwan. The LDM is the top user of Internet II in the "Advanced Applications" category. This paper describes the current LDM release. Its structure, behavior, and performance are presented as well as current usage, lessons learned, and future development plans.