It is the responsibility of our Ajax code to check for 304 status, and if found, simply not to change client application state based on the (absence of) data sent from the poll.
If the task needs to be more responsive, it can poll the interrupted status more frequently.
如果任务需要提高响应能力,那么它可以更频繁地轮询中断状态。
3
An Ipsos MORI poll in August showed a public no longer squarely behind the status quo: 37% said the licence fee was not the right way to fund the BBC, and 47% denied it was good value.