1.内存模型之并发
https://golang.org/ref/mem
下面三篇是这篇官方文档的不同翻译
http://hugozhu.myalert.info/2013/04/20/31-golang-memory-model.html
http://www.jb51.cc/article/p-ehcywgbs-d.html
https://studygolang.com/articles/1597
2.gc
https://www.zhihu.com/question/21615032
3.Golang 内存管理，mcache mcentral mheap说明（木有看，看不懂）
https://zhuanlan.zhihu.com/p/27807169
