The Perl Toolchain Summit needs more sponsors. If your company depends on Perl, please support this very important event.

<!--  Presentation generated by Internet Assistant for Microsoft PowerPoint 97 -->

<HTML>
<HEAD>

<meta name="GENERATOR" content="Microsoft Internet Assistant for Microsoft PowerPoint 97">
 <TITLE>DBD::Multiplex</TITLE> 
</HEAD>

<BODY     >

<CENTER>
<TABLE WIDTH=100%> 
     <TR> <TD WIDTH=100% ALIGN=CENTER>
         <A HREF="sld001.htm">First</A>&nbsp;&nbsp;
         <A HREF="sld070.htm">Previous</A>&nbsp;&nbsp;
         <A HREF="sld072.htm">Next</A>&nbsp;&nbsp;
         <A HREF="sld080.htm">Last</A>&nbsp;&nbsp;
&nbsp;&nbsp;         <A HREF="index.htm">Index</A>&nbsp;&nbsp;
         <A HREF="http://dbi.perl.org">Home</A>&nbsp;&nbsp;
         <A HREF="tsld071.htm">Text</A>&nbsp;&nbsp;
     </TD> </TR>
     <TR> <TD WIDTH=100% ALIGN=CENTER>
         <IMG SRC="img071.gif" usemap="#Objmap" WIDTH=800 HEIGHT=600 BORDER=0>
     </TD> </TR>
</TABLE>
<P>Slide 71 of 80</P>
</CENTER>
<!-- <UL>
<H2>DBD::Multiplex</H2>
</UL></P>
<P><UL>
<LI><H2>DBD::Multiplex
</H2>
<UL>
<LI>Connects to multiple databases at once (via DBI)
<LI>Single $dbh used to access all databases
<LI>Executes each statement on each database by default
</UL></UL><UL>
<LI><H2>Could be configured to:
</H2>
<UL>
<LI>insert into all databases but select from one
<LI>fallback to alternate database if primary is unavailable
<LI>select round-robin / or at random to distribute load
<LI>select from all and check results (pick most common)
</UL></UL><UL>
<LI><H2>Can be used with DBD::Proxy, either above or below
</H2>
</UL><UL>
<LI><H2>May also acquire fancy caching in later versions
</H2>
</UL><UL>
<LI><H2>Watch this space: ftp://not.tdlc.com/pub/Multiplex.pm
</H2>
<UL>
<LI>developed by Thomas Kishel</UL></UL></P>
<P>  --><MAP NAME="Objmap">
<AREA SHAPE=POLYGON COORDS="235, 500, 556, 500, 556, 532, 235, 532" HREF="ftp://not.tdlc.com/pub/Multiplex.pm" >
</MAP>

</Body>
</HTML>