On Wed, Jun 3, 2009 at 1:30 AM, John Mettraux <jmettr...@openwfe.org> wrote:
> > On Wed, Jun 3, 2009 at 12:54 AM, Diego Moreno <dmor...@dit.upm.es> wrote: > > I am thinking about two posibilities: > > > > * Using nginx as a request dispatcher to serve requests torwards a > mongrel > > cluster. This is a good deployment for rails applications and it is > surely > > useful with concurrent requests. But I don’t know how to make mongrels > share > > a single workflow engine instance (ruote instance). > > Others, like Kenneth, have taken the ruote-rest way (and later > ruote-kit) to let the workflow engine sit in a web application behind > the front web application[s]. > Hi Diego We've discussed this issue on the list before at http://groups.google.com/group/openwferu-users/browse_thread/thread/bbea87de0e7b5bce/3b8d3cb6998b73c3, but I'll summarize it for you again. The problem with running multiple instances of the engine (inside mongrels/passenger) is that you'll have the schedulers tramping all over each other, amongst other things. John and myself have discussed some conceptual enhancements to ruote that would allow for multiple instances to run together, but those chats were more of a "wow, that would be awesome!" nature than anything serious. We using ruote-rest in production, and a few other members of the group do too. Rails than polls ruote-rest for workitems, and launches processes, etc, much the same way it would use a database. Actually, ruote-rest can be thought of a workitem database :) I've extracted some our production code and smacked it on github [1] that shows how we go about this. The code is first iteration and is going to evolve into a Ruby gem that will be the client for ruote-kit. In close, if your userbase is small and request volumes low, stick to a single evented server like thin and possible enable threadsafe mode inside rails (making sure your code is threadsafe). That should give you decent milage before needing ruote-rest. If however this is not the case, and you'll need to do a lot of requests, strip the engine out of rails and get ruote-rest behind it as quickly as possible. [1] http://github.com/kennethkalmer/ruote-rest-rails-client -- Kenneth Kalmer kenneth.kal...@gmail.com http://opensourcery.co.za @kennethkalmer --~--~---------~--~----~------------~-------~--~----~ you received this message because you are subscribed to the "ruote users" group. to post : send email to openwferu-users@googlegroups.com to unsubscribe : send email to openwferu-users+unsubscr...@googlegroups.com more options : http://groups.google.com/group/openwferu-users?hl=en -~----------~----~----~----~------~----~------~--~---
