On Mon, Jul 6, 2009 at 9:04 PM, Jonathan Zuckerman <j.zucker...@gmail.com>wrote:
> On Mon, Jul 6, 2009 at 5:56 PM, Pranjal Thakur<pranj...@gmail.com> wrote: > > I am using the apache mod_proxy load balancer: > > http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html > > > > I am not able to find any configuration change that I could make to > achieve > > this. > > Here is the situation: > > my web application has 2 versions say N and N+1. N has 5 instances and > N+1 > > has 5 instances running on the same cloud. > > A user gets to an instance of N the first time. I want all the following > > requests from that user to go to any of the 5 instances of N and not go > to > > any instance of N+1 at all. > > > > > > On Mon, Jul 6, 2009 at 7:26 PM, Jonathan Zuckerman < > j.zucker...@gmail.com> > > wrote: > >> > >> On Mon, Jul 6, 2009 at 1:49 PM, Pranjal Thakur<pranj...@gmail.com> > wrote: > >> > Hello, > >> > My problem is mentioned in the previous post (see below). I want to > add > >> > that > >> > I cannot use sticky sessions as the cloud that hosts our sessions is > >> > fully > >> > clustered and so has the ability to send requests to a different > server > >> > instance in case the current instance fails. > >> > > >> > let me know if there is a way to achieve this. > >> > thanks. > >> > > >> > On Mon, Jul 6, 2009 at 11:24 AM, Pranjal Thakur <pranj...@gmail.com> > >> > wrote: > >> >> > >> >> This is more of a theoretical question. > >> >> I want to know if it is possible to do this: > >> >> > >> >> I have various versions of a web application, each running certain > >> >> number > >> >> of instances. > >> >> When a request comes in, it goes to a certain instance of some > version. > >> >> I want the load balancer to now route further requests from this user > >> >> to > >> >> only the instances of the version it was first routed to. > >> >> I can maintain a cookie or some other way to save the version number > of > >> >> the instance. But I need the load balancer to now take that into > >> >> consideration for further requests. > >> >> Is this possible and Is there any plugin available for this? > >> >> > >> >> Any help will be appreciated. thank you. > >> > > >> > > >> > >> Probably will need to contact whoever hosts your app for more info, > >> but theoretically I don't see why this can't be achieved, what type of > >> load balancer are you using? I used netscaler briefly in the past and > >> it was infinitely configurable.. > >> > >> --------------------------------------------------------------------- > >> The official User-To-User support forum of the Apache HTTP Server > Project. > >> See <URL:http://httpd.apache.org/userslist.html> for more info. > >> To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org > >> " from the digest: users-digest-unsubscr...@httpd.apache.org > >> For additional commands, e-mail: users-h...@httpd.apache.org > >> > > > > > > I've written a few APIs and we always include the version in the URL > somewhere (querystring, subdomain, whatever), so that new versions > won't break compatibility. Is this an option? > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org > " from the digest: users-digest-unsubscr...@httpd.apache.org > For additional commands, e-mail: users-h...@httpd.apache.org > yes, that sounds like an option. what kind of apis do I need to write to make the apache web server read the version and route to the correct instance?
