httpd-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Allen Pulsifer" <pulsif...@comcast.net>
Subject RE: [users@httpd] setting MaxClients locally?
Date Fri, 08 Jun 2007 09:55:25 GMT
Hi Martin,

You could run two completely separate instances of httpd, one listening on
port 80 with MaxClients=100 serving your normal content, and the other
listening at port 8000 with MaxClients=20 serving your large PDF's.  This
would require two completely separate http.conf files (for example,
http.conf and http-pdf.conf), and launching the second instance using the
httpd -f option.  You would also have to change all links to the PDF's from
www.yoursite.com/file.pdf to www.yoursite.com:8000/file.pdf.  Alternately,
you could assign the second server instance to a different IP address
instead of a different port, configure DNS to make this IP address answer to
a subdomain like pdfs.yoursite.com, and then change the PDF links from
www.yoursite.com/file.pdf to pdfs.yoursite.com/file.pdf.

Another option might be to move the PDF files to a hosting service such as
Amazon S3, http://www.amazon.com/S3-AWS-home-page-Money/.  Files uploaded to
Amazon S3 can be made publicly available at a URL such as
http://s3.amazonaws.com/your-bucket-name/file.pdf or
http://your-bucket-name.s3.amazonaws.com/file.pdf, or using DNS tricks, at a
virtual host such as pdfs.yoursite.com/file.pdf or
www.yourpdfsite.com/file.pdf.  See
http://docs.amazonwebservices.com/AmazonS3/2006-03-01/VirtualHosting.html.
The cost of S3 is $0.18 per GB of data transfer, plus storage and request
charges.

Allen

> -----Original Message-----
> From: Martijn [mailto:sweetwatergeek@googlemail.com] 
> Sent: Friday, June 08, 2007 5:27 AM
> To: users@httpd.apache.org
> Subject: [users@httpd] setting MaxClients locally?
> 
> 
> Hello.
> 
> A bit of a long shot... On my website, there is a directory 
> containing a relatively large number of big files (PDFs). 
> Every now and then, there is a user that sees them, gets very 
> excited and downloads them all within a short period of time 
> (probably using FF's DownThemAll plugin or something 
> similar). Fair enough, that's what they're for, but, 
> especially if the user is on a slow connection, this will 
> make them use all available child processes, causing the site 
> to be unreachable by others, which leads to swapping and, 
> eventually, crashing.
> 
> I'm looking for a quick, on the fly way to prevent this from 
> happening (in the long run, the whole server code will be 
> re-written, so I should be able to use some module - or write 
> one myself). I googled a bit about limiting the number of 
> child processes per IP address, but that seems to be a tricky 
> business. Then I was thinking, is there perhaps a nice way of 
> setting MaxClients 'locally' to a small number, so that no 
> more than, say, 10 or 20 child processes will be dealing with 
> requests from a certain directory, while the other processes 
> will happily be dealing with the rest? E.g. (non-working 
> example!) something like
> 
> MaxClients 100
> 
> <Directory /pdf>
> LocalMaxClients 20
> </Directory>
> 
> I know this won't be the nicest solution - it would still 
> prevent other, non-greedy users to download the PDFs while 
> the greedy person is leaching the site - but something like 
> this would make my life a lot easier for the time being. Oh, 
> and perhaps I should add that I don't really care about bandwidth.
> 
> Any ideas?
> 
> Martijn.
> 
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP 
> Server Project. See 
> <URL:http://httpd.apache.org/userslist.html> for more info. 
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>    "   from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
> 


---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
   "   from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org


Mime
View raw message