title: Appendix A: Downloading software and documentation

=head1 Coverage

Here you will find instructions for downloading the software and
its related documentation.

=head1 Perl

Perl is probably already installed on your machine, but you should at
least check the version you are using. It is highly recommended that
you have at least Perl version 5.004. You can get the latest perl
version from http://www.perl.com/ .  Try the direct download link
http://www.perl.com/pace/pub/perldocs/latest.html . You can get Perl
documentation from the same location (although copious documentation
is included in the downloaded Perl distribution).

=head1 Apache

Get the latest Apache webserver and documentation from
http://www.apache.org .  Try the direct download link
http://www.apache.org/dist/ .

=head1 mod_perl

Get the latest mod_perl sources and documentation from
http://perl.apache.org .  Try the direct download link
http://perl.apache.org/dist/ .

Source/Binary Distributions: http://perl.apache.org/distributions.html

RPM: http://perl.apache.org/rpm/

Debian users will find Perl, Apache and mod_perl are available as .deb files
on official image CDs or from the Debian web site http://www.debian.org . The
Debian distribution also contains many additional Perl and Apache libraries
and modules. 

=head1 Squid - Internet Object Cache

http://squid.nlanr.net/

Squid Linux 2.x Redhat RPMs : http://home.earthlink.net/~intrep/linux/

=head1 thttpd - tiny/turbo/throttling HTTP server

http://www.acme.com/software/thttpd/

=head1 mod_proxy_add_forward

Ask Bjoern Hansen has written a C<mod_proxy_add_forward.c> module for
Apache that sets the C<X-Forwarded-For> field when doing a ProxyPass,
similar to what Squid does.  His module is at:
http://modules.apache.org/search?id=124, at
ftp://ftp.netcetera.dk/pub/apache/mod_proxy_add_forward.c or
http://www.cpan.org/authors/id/ABH/mod_proxy_add_forward.c

complete with instructions on how to compile it in and whatnot.

=head1 httperf - webserver Benchmarking tool

http://www.hpl.hp.com/personal/David_Mosberger/httperf.html

=head1 ab - ApacheBench

Comes with the Apache distribution.

=head1 mod_backhand -- load balancing for Apache

http://www.backhand.org/mod_backhand/


=head1 High-Availability Linux Project

You will find the definitive guide to load balancing techniques at the
High-Availability Linux Project site --
http://www.henge.com/~alanr/ha/

More load balancing URLs:

lbnamed - a load balancing name server written in Perl, by Roland Schemers
http://www.stanford.edu/~riepel/lbnamed/
http://www.stanford.edu/~riepel/lbnamed/bof.talk/
http://www.stanford.edu/~schemers/docs/lbnamed/lbnamed.html

Network Address Translation and Networks: Virtual Servers (Load Balancing) 
http://www.csn.tu-chemnitz.de/~mha/linux-ip-nat/diplom/node4.html#SECTION00043100000000000000

Linux Virtual Server Project
http://www.linuxvirtualserver.org/

Efficient Support for P-HTTP in Cluster-Based Web Servers. (with Mohit
Aron and Willy Zwaenepoel.) In Proceedings of the USENIX 1999 Annual
Technical Conference, Monterey, CA, June 1999.
http://www.cs.rice.edu/~druschel/usenix99lard.ps.gz
http://www.usenix.org/publications/library/proceedings/usenix99/full_papers/aron/aron_html/index.html

The latest ip filter includes some simple load balancing code, that
allows a round-robin distribution onto several machines via
ipnat. That may be a simple solution for a few specific load problem.
http://coombs.anu.edu.au/~avalon/ipf3.4beta3.tgz


=head1 Apache::Request

Get it from CPAN at $CPAN/authors/id/DOUGM/libapreq-x.xx.tar.gz or
from http://perl.apache.org/dist/libapreq-x.xx.tar.gz . (replace x.xx
with the current version)

=head1 DataBases

Low-Cost Unix Database Differences
http://www.toodarkpark.org/computers/dbs.html

My collection of various links to databases implementations
http://stason.org/TULARC/webmaster/db.html

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