这种用例就是我说的，经常变化的乱七八糟的各种商业数据的处理，用Clojure很合适。
NASA's Common Metadata Repository (CMR) is a high-performance, high-quality,
continuously evolving metadata system that catalogs all data and service
metadata records for NASA's Earth Observing System Data and Information
System (EOSDIS) system and will be the authoritative management system for
all EOSDIS metadata.
Clojure写的： https://github.com/nasa/Common-Metadata-Repository
