iaas,paas,saas:
http://www.ruanyifeng.com/blog/2017/07/iaas-paas-saas.html
depend_lib_order:
https://blog.csdn.net/rryqszq4/article/details/51142468
https://blog.csdn.net/sistwl/article/details/81381937
https://www.cnblogs.com/GnibChen/p/8649476.html
libwebsockets
https://blog.csdn.net/qifengzou/article/details/50281545
https://blog.csdn.net/qq_39101111/article/details/79025438