Yep. Get your point.
Appreciate your thoughts and help.
Kind regards.
-----Original Message-----
From: Boyle Owen [mailto:Owen.Boyle@swx.com]
Sent: 05 July 2005 09:24
To: users@httpd.apache.org
Subject: RE: [users@httpd] Proxy Server to Web Server Ratio
> -----Original Message-----
> From: Veary, Marc, VF UK - Technology (TS)
> [mailto:Marc.Veary@gb.vodafone.co.uk]
> Sent: Dienstag, 5. Juli 2005 10:11
> To: users@httpd.apache.org
> Subject: RE: [users@httpd] Proxy Server to Web Server Ratio
>
>
> My question was badly crafted, apologies...
>
> Let me try again with an example:
>
> If I have 50 web sites, each a cluster of 10 physical
> machines with a web server on each. Now, I want to place
> Apache in front of these 50 sites (web server clusters) as a
> reverse proxy. What I am trying to figure out is roughly how
> many physical machines I might need to host an Apache web
> server for each cluster?
It's got nothing to do with the *number* of machines. Presumably, all these internal server
are on a LAN - there's no limit to the number of machines you can have on the LAN (apart from
the hard-limit from the width of the address space).
Note that I am NOT saying that your physical machine can handle an infinite amount of traffic
- only that there is no limit defined by the protocol...
I think your question is really about bandwidth (which is quite a separate subject) and is
impossible to answer without knowing the expected traffic on each site. You could have a million
webservers and proxy them over a dial-up modem - if no-one ever requests a page from them...
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.
>
> Would 2 physical machines (clustered) handle the throughput
> for a cluster of 10 web servers? Is there a 'wet string'
> guideline to the number of web servers (serving a single
> site) that can be handled by a single Apache 2 proxy?
>
> It is possible that I have just not understood...
>
> Many thanks for any help.
>
> Kind regards,
> --
> Viz
>
> -----Original Message-----
> From: Boyle Owen [mailto:Owen.Boyle@swx.com]
> Sent: 05 July 2005 08:42
> To: users@httpd.apache.org
> Subject: RE: [users@httpd] Proxy Server to Web Server Ratio
>
> > -----Original Message-----
> > From: Veary, Marc, VF UK - Technology (TS)
> > [mailto:Marc.Veary@gb.vodafone.co.uk]
> > Sent: Dienstag, 5. Juli 2005 09:35
> > To: users@httpd.apache.org
> > Subject: [users@httpd] Proxy Server to Web Server Ratio
> >
> >
> > Hi All,
> >
> > I am new to using Apache as a proxy. Could someone give me a
> > rough idea
> > of how many web servers Apache 2 can proxy?
>
> As many as there are on the internet.
>
> Apache simply takes incoming requests from the client and
> re-issues them to whatever proxy is defined in the config
> rules for the given request...
>
> Reading between the lines, I suspect you are harbouring a
> misconception about how HTTP operates. It is not a
> connection-based protocol - it is connectionless and
> stateless. So your question is not like "how many phone calls
> can a switchboard handle?", it is more like "how many
> addresses can the post office deliver to?"
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may be ignored.
>
> > I know this is
> > like asking
> > 'How long is a piece of string?', but I need a rough starting point.
> > Does anyone know of any stats from testing (mind craft, etc)?
> >
> > Kind regards,
> > --
> > Viz
> >
> >
> >
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