Azeez First thoughts are this is *very* cool.
My second thought is that its a little too "hard coded". It would be nice to allow plugging in different group/cluster discovery mechanisms. Paul On Wed, Jun 11, 2008 at 12:47 PM, Afkham Azeez <[EMAIL PROTECTED]> wrote: > Hi Folks, > There are some limitations in the current load balancer. e.g. if we have 2 > identical services in 2 different worker nodes, which are fronted by a > synapse load balancer instance. In such a case, we need to provide 4 > endpoints in the synapse.xml file. As can be seen, this is not a very > scalable solution. Hence, I'm implementing an Intelligent load balancing > mechanism where the application members are discovered at runtime, and the > endpoint do not need to be statically specified in the synapse.xml file. So > the synapse.xml file will simply look like this: > > <definitions xmlns="http://ws.apache.org/ns/synapse";> > <sequence name="main" onError="errorHandler"> > <in> > <send> > <endpoint> > <intelligentLoadbalance/> > </endpoint> > </send> > <drop/> > </in> > <out> > <send/> > </out> > </sequence> > > <sequence name="errorHandler"> > <makefault> > <code value="tns:Receiver" > xmlns:tns="http://www.w3.org/2003/05/soap-envelope"/> > <reason value="COULDN'T SEND THE MESSAGE TO THE SERVER."/> > </makefault> > <header name="To" action="remove"/> > <property name="RESPONSE" value="true"/> > <send/> > </sequence> > </definitions> > > Currently, the application endpoints are calculated by replacing the IP and > port of the incoming request with that of the member to which this request > will be forwarded to. I have only tested with HTTP/S for the moment. More > details about the design can be found here: > http://afkham.org/2008/06/fault-resilient-dynamic-load-balancing.html > > Please provide your valuable feedback on this approach. > > -- > Thanks > Afkham Azeez > > http://afkham.org > http://www.wso2.org > GPG Fingerprint: 643F C2AF EB78 F886 40C9 B2A2 4AE2 C887 665E 0760 -- Paul Fremantle Co-Founder and CTO, WSO2 Apache Synapse PMC Chair OASIS WS-RX TC Co-chair blog: http://pzf.fremantle.org [EMAIL PROTECTED] "Oxygenating the Web Service Platform", www.wso2.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
