Re: [jetty-users] asynchronous flush?

[Viktor Szathmáry <phraktle@xxxxxxxxx>]

Hi Simone,

Thanks for the response! CometD sounds like an overkill for this particular use case (we’re talking about a  servlet with 200 lines of code :)

Asynchronous writes would work, but the part I’m missing is how can one force a flush to the client before filling up the buffer.

Thanks,

  Viktor

On July 28, 2016 at 15:12:06, Simone Bordet (sbordet@xxxxxxxxxxx) wrote:

Hi,

On Thu, Jul 28, 2016 at 12:28 PM, Viktor Szathmáry <phraktle@xxxxxxxxx> wrote:
> Hi,
>
> Is there a non-blocking way of forcing flushing the output of a servlet?
>
> The use case is Server-Sent Events, where we’re trying to push messages to a
> large number of clients via AsyncContext. Calls to flushBuffer are blocking
> and we experience a backlog due to slow clients.

For this particular use case, sending messages to large number of
clients, CometD (https://cometd.org) is a much better solution, more
scalable, etc.

With Servlet 3.1 async I/O you might be able to avoid blocking.
Again, CometD already provides you with a transport based on Servlet
3.1 Async I/O, so you don't have to write this infrastructural code,
and you just concentrate on your business.

--
Simone Bordet
----
http://cometd.org
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