[Sur] Servidor de Actividades en Uruguay

Martin Langhoff martin.langhoff en gmail.com
Mar Oct 13 12:31:36 EDT 2009

On Tue, Oct 13, 2009 at 6:22 PM, David Farning <dfarning at sugarlabs.org> wrote:
> Thanks Martin,
> A couple of questions:)


> Can you point me towards a good reference about transparent proxies
> and how to tune them?

It's just an HTTP proxy...
 - that doesn't declare itself in the headers - naughty!
 - where the client thinks it is connecting to your server, but a
firewall rule at the ISP redirects the TCP traffic to the proxy

So the tuning of its cache is the same as any other HTTP proxy. The
thing is, we want to talk to the admin of that proxy to learn what
proxy it is, how it is configured, and why it is not caching our stuff

The problem may be at the proxy... or at the server. I want to fix
this for wiki.laptop.org -- for the same reasons you want to fix it
there :-)

If the result is that we make fixes on our servers, our content
becomes more cacheable to all proxies :-)

> Do you have a point of contact within Ceibal who I can talk to about this?

No, but I am hoping to talk with them soon. Will make sure to mention
that you have a similar interest.

> What about in situations, such as at home, where requests will not
> pass through a Ceibal proxy?

I think that's a smaller % of traffic, and maybe the ISP is also
running transparent proxies... :-)

Even after tuning it won't be perfect. But I think we'll get most of
the benefit for a small fraction of the effort. And the ongoing effort
of mirrors is not trivial.


 martin.langhoff at gmail.com
 martin at laptop.org -- School Server Architect
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first
 - http://wiki.laptop.org/go/User:Martinlanghoff

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