acquired package info from repodata DB: repodata/0bb9c12c9a1cdb37ea0e3a14791dedb26d490933f951082456e2949d545297ad-primary.sqlite.bz2
MessagePack, a binary-based efficient data interchange format
MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small.