Large number of (dynamic?) backends

[Baptiste]

On Mon, Mar 30, 2015 at 8:46 PM, Jonathan Matthews
<contact at jpluscplusm.com> wrote:
> On 30 Mar 2015 18:59, "Kevin Day" <toasty at dragondata.com> wrote:
>>
>> I have a use case where I need to be able to take an incoming request like
>> "/XXX/filename" and translate that to fetching
>> "http://nodeXXX.example.com/filename" where there'd literally be hundreds of
>> backend servers. i.e. XXX would be a varying 3 digit number.
>>
>> I saw this post here:
>>
>>
>> https://www.varnish-software.com/blog/truly-dynamic-backend-definition-varnish
>>
>> From 2012, but I know a lot has changed since then. Is there an easy way
>> this can be accomplished now?
>
> Modulo a significant advance in varnish dynamic backends I've missed, I'd do
> this with Varnish talking to one or more local or remote Nginx instances -
> it's trivial to implement that dynamic routing there. I wouldn't move to
> nginx alone however - varnish definitely does a better job of caching. IMHO
> & IME :-)

Hi,

Forget about nginx, you could easily do this with HAProxy. It requires
a bit of rewriting then either a map or use-server rule with the
freshly created Host header :)
And it is processed at light speed without any latency.

Baptiste