Re: [squid-users] Architecture

Last time I looked at lighty, it buffered the entire message when used
in proxy mode; this isn't really workable.

I'd use Squid on the FE in CARP mode; CARP is a way of using
consistent hashing to spread the load out to multiple servers in a
predictable way (like a DHT).

If you need even more capacity, you could run multiple instances of
squid on the FE listening to the same socket; see
   http://www1.id.squid-cache.org/mail-archive/squid-users/200810/0136.html

Cheers,

On 24/06/2009, at 9:18 AM, Ronan Lucio wrote:

> Hi Kinkie,
>
> On Tue, 23 Jun 2009 21:51:17 +0200, Kinkie wrote
>> Hi,
>> I can't see the advantage of using lighthttpd instead of squid+carp
>> as the frontend,
>
> The idea of putting a lighttpd server as a the frontend is for load
> balance.
>
> What exactly do you mean with squid+carp? several squid servers
> working as one?
> Can I have it working in an external DataCenter?
> If so it seems to be a better solution, even because it's a fault
> tolerance
> solution.
>
>> and if using lighthttpd i can't see the advantage of
>> not serving static content directly out of the balancer.
>
> Actually, I'm just afraid of overload the server.
> Initially I don't know exactly how much resources would it consume
> from each
> server.
> If a server like that fits executing two roles, I'm sure it would be
> better.
>
>> Also watch out as nfs has locking and scaling issues of its own
>> (assuming thet nfs is what you mean by "single filesystem"), and it
>> also introduces a very nasty point-of-failure.
>
> Yes, it's a NAS.
>
> Kinkie, the architecture shouldn't be that suggested from me.
> It's just how I could figure out. Of course I want to make it better.
> Do you have a suggestion for that?
>
> For all I have understood your suggestion is:
>
> 1) Some squid servers + carp
>
> 2) Application server as the backend servers
>
> 3) A third server serving static resources
>
> I just didn't figure out your suggestion for storage.
>
> Thank you,
> Ronan

--
Mark Nottingham       mnot_at_yahoo-inc.com