并发编程要了解的

http://en.wikipedia.org/wiki/Memory_Bank

http://en.wikipedia.org/wiki/Memory_ordering

http://www.infoq.com/articles/memory_barriers_jvm_concurrency

（http://www.infoq.com/cn/articles/memory_barriers_jvm_concurrency）

http://www.alexonlinux.com/multithreaded-simple-data-type-access-and-atomic-variables