Telling senders to back off on overloaded server?

[Kevin Burton]

I assume I basically have to change interest ops on the channel when the
buffer is empty/full?

Kevin

On Tue, Oct 25, 2011 at 4:18 PM, Kevin Burton <burtonator at gmail.com> wrote:

> How do I tell the sender of data (I control both) to back off if I can't
> accept any more data on the server?
>
> Specifically, I have an HTTP PUT implementation that first writes to a
> queue and then I drain the queue to disk.
>
> When the queue fills up because the server is overloaded, I need a way to
> tell the sender to back off...
>
> Normally the TCP buffers would just fill up on both ends and the sender
> wouldn't receive ACKs any more and wouldn't send more packets until the
> existing ones have been ack'd ...
>
> I just don't now how to tell Netty to stop sending me data because I can't
> handle it...
>
> I don't want to use any threads in my application if they're not needed.
>
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