Hi Rob, Nice! Thanks for releasing this. I’m not sure when I’ll use this but I can pretty much guarantee that I will give it a go sooner or later. I’ve written a few of these in the past, it’s good to see someone make a library out of it.
BTW, things like AngularJS and EmberJS should/could know about 503 errors and what they mean. There’s actually a project, that I’ve *not* used (yet), https://github.com/kkolstad/angular-servicestack that will re-try on a 503 after a random delay. Here’s the line from their source code (it’s coffeescript): sleepTime = Math.min (Math.random() * (Math.pow(4, response.collisionCount() - 1) * 100)), serviceStackRestConfig.maxDelayBetweenRetries Cheers, Bob On Nov 16, 2013, at 1:21 PM, Rob Day <r...@rkd.me.uk> wrote: > Hi all, > > I've just published the first working version of a Ring middleware that some > of you might find useful. It's designed for web apps where, if you're > overloaded, it's better to serve some requests quickly and fail the others > than to try and serve all the requests and do it slowly. (My background > is in telecoms, where that's often the best approach.) > > Specifically, you specify a target latency that you want 90% of requests to > try and meet, and it applies the algorithm from > http://www.eecs.harvard.edu/%7Emdw/papers/control-usits03.pdf to try and keep > your latency below that threshold. The exact parameters of the algorithm are > tunable, and different URLs or groups of URLs can have different targets and > parameters. > > It still needs a bit of tidying - docstrings, cleaning up some of the Midje > tests, and so on - but it works and I think the documentation is usable, so > I'm announcing it now. > > Github (w/ docs): https://github.com/rkday/overload-middleware > Clojars: https://clojars.org/overload-middleware > > Let me know if you have any feedback! > Rob -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
