Folly是Facebook的一个开源C++11组件库，提供了类似Boost库和std库的功能，包括散列、字符串、向量、内存分配、位处理等，满足大规模高性能的需求。-Folly is an open source Facebook C++11 component library, similar to the Boost libraries and std library functions, including hash, string, vector, memory allocation,