I think you are confusing SPDY[1] with WebSockets[2]. SPDY is Google's experimental replacement for HTTP. You don't build your app around it at all - from the application layer it should be mostly invisible.
SPDY can be implemented as an Apache module[3] which could be used only when the browser supports it.
It is true that WebSockets replace long polling, but there are plenty of libraries that abstract the differences out nicely.
SPDY can be implemented as an Apache module[3] which could be used only when the browser supports it.
It is true that WebSockets replace long polling, but there are plenty of libraries that abstract the differences out nicely.
[1] http://www.chromium.org/spdy [2] http://en.wikipedia.org/wiki/WebSocket [3] http://code.google.com/p/mod-spdy/