阻塞和非阻塞是针对内核和上层应用来说的;同步和异步是针对应用和开发者来说的来说的。 ![Image text](../image/netty/aio-nodejs-0.png) ![Image text](../image/netty/aio-nodejs-1.png) ![Image text](../image/netty/aio-nodejs-2.png) ![Image text](../image/netty/aio-nodejs-3.png) ![Image text](../image/netty/aio-netty-0.png) ![Image text](../image/netty/aio-netty-1.png) ![Image text](../image/netty/aio-netty-2.png) ![Image text](../image/netty/aio-netty-3.png) ![Image text](../image/netty/aio-netty-4.png) ![Image text](../image/netty/aio-netty-5.png)