Hi,

Am Sonntag, 19. Januar 2014 03:04:40 UTC+1 schrieb Benjamin R. Haskell:
>
> On Sat, 18 Jan 2014, Brian Craft wrote: 
>
> > http://www.youtube.com/watch?v=OEZZOz6__CY 
> > 
> > At about 30 min he mentions that gzip, etc. aren't so interesting here 
> > because we can use, um.. something transfer, proxies... don't know 
> > what he's saying. Anyone know what he's talking about? 
>
> Slide for context: 
>
> {:media-type "application/edn" 
>   :language "de" 
>   :charset "UTF-8" 
>   :encoding "deflate"} 
>
> With that on-screen, he says: 
>
> """ 
> ...and we have an encoding, which can be for example, deflate or gzip or 
> like that, um, which we don't care about a lot, I think, on this side of 
> the 
> server, because we can use like transparent proxies to do all those 
> on-the-fly gzip things for us, but it's possible. 
> """ 
>
> Presumably, he's talking about something like putting a Clojure app 
> behind an nginx frontend server, where handling gzip is as simple as 
> adding 'gzip on;' to the 'server {}' configuration block.  (So, you 
> don't care about gzip'ing on the Clojure side of the application, you 
> care about it on the transparent-proxying-server side.)  
>

Yes, that's exactly what I meant in the talk. Liberator can negotiate the 
content 
encoding but I does not implement any out of the box. If you really want to 
do it
in your liberator resource, you'd need to implement it in your handler 
function
and must not forget to set the "content-encoding" header.

However, it is much easier to delegate this to a transparent proxy. If you
want to have a ring-only system, then 
https://github.com/mikejs/ring-gzip-middleware
might be a way to implement content-encoding lightweight.

-billy.

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