Hi Kevin
I found it extremely beneficial to read the Twisted sources, in particular twisted.internet.defer. In your case, see https://github.com/twisted/twisted/blob/trunk/twisted/internet/task.py#L821
One nice thing that happens when you read the source is that you see quite a number of API methods (including deferLater, and also succeed, fail, maybeDeferred, some of the Deferred class methods, DeferredList, and the wonderful DeferredQueue) are actually just a few lines of code, doing something quite simple with a deferred. I found that figuring out how they all did what they did made my understanding of deferreds much better. I really love deferreds :-) Here's a bit I wrote about them, using DeferredQueue as the example http://blogs.fluidinfo.com/terry/2010/07/23/asynchronous-data-structures-wit...
Hope that helps.
Terry
On Thu, Dec 17, 2015 at 8:38 AM, Kevin Mcintyre kebin70@gmail.com wrote:
holy moly - you're right! This fool will sleep so much better...a million thanks.
On Thu, Dec 17, 2015 at 12:09 AM, Amber "Hawkie" Brown < hawkowl@atleastfornow.net> wrote:
On 17 Dec 2015, at 08:11, Kevin Mcintyre kebin70@gmail.com wrote:
Hey - I'm confused, so nothing new :) ...but I'm running at this
example and I'm scratching my head.
http://twistedmatrix.com/documents/current/web/howto/web-in-60/asynchronous-...
I would've thought 2 requests could be served simultaneously, but when
I fire off 2 requests the first received gets it's response after 5 seconds, while the second response takes 10 seconds.
I think I understand what's happening, but I don't know why...and I
would love an example where the subsequent request doesn't have to wait for the first request to finish.
Thanks, Kevin
I've ran into this before -- browsers sometimes rate-limit requests, and won't actually send the second request until the first is done, over the same connection, rather than making a second TCP connection -- try using cURL or wget, which has no such limitation, and see if it works any better.
- Amber
Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python