I use it to dispatch to another app. As for ordering, I think you would need to do it from the app if I understand your use case correctly.
Sergej On Wed, Jun 9, 2010 at 5:38 PM, Jonah Benton <[email protected]> wrote: > Thanks for the rapid response. At first blush, X-Accel-Redirect > doesn't look to be quite what I need: > > * it appears that the specific use case is to dispatch to optimized > static file delivery; it's not clear whether the > dispatched-to-back-end can be another app, rather than something that > can be delivered with sendfile() > * assuming the dispatched-to-backend can be another app, can apps > arbitrarily chain themselves together with a series of > X-Accel-Redirect responses, or does nginx impose some sort of limit > * if apps can arbitrarily chain themselves together, this still means > I need to maintain the app ordering in the webapp rather than in the > proxy. The webapps are java, so this will be a little tricky, and the > chaining appears to have to be by path, which would be proxy-only > knowledge. > > So, maybe it's doable, though I'd rather be able to just maintain the > ordering in the proxy configuration. > > I'll look some more, though, thank you for the pointer. > > On Wed, Jun 9, 2010 at 2:58 AM, Rapsey <[email protected]> wrote: > > You can't do this with haproxy, but you can with nginx and > X-Accel-Redirect > > > > > > Sergej > > > > On Wed, Jun 9, 2010 at 5:17 AM, Jonah Benton <[email protected]> wrote: > >> > >> Greetings, > >> > >> I have several web applications that each service different portions > >> of the same taxonomy. The taxonomy is very deep- millions of > >> resources- and the rules that dictate which part of the taxonomy each > >> application serves are fluid and changing. In general it isn't easy to > >> determine declaratively which web application should service which > >> uri. > >> > >> I'd like to set up a proxy dispatch hierarchy, such that requests > >> arriving at a proxy front end would be dispatched to one of the web > >> applications. The response from web application 1 would checked by the > >> proxy front end. If it's a 404, then the front end discards the > >> response from web application 1, and dispatches to the next web > >> application. If non-404, then the response is returned to the client > >> and the transaction is considered handled. A 404 response from the > >> last web application would be considered a true 404 and would get > >> returned to the client. > >> > >> From a quick look at the configuration, it doesn't appear that this > >> can be done with HAProxy (nor with any other proxy software I've > >> looked at). Am I wrong, can this be arranged? > >> > >> Please cc me, I'm not subscribed to the list. > >> > >> Thank you, > >> > >> Jonah > >> > > > > >
