1 Reply Latest reply on Mar 24, 2012 8:36 AM by Wolf-Dieter Fink

    AS 7.1 HA-JNDI alternative

    Wouter De Borger Newbie

      Hi all,

       

      I'm trying to do a 2 tier deployment, with the presentation (wars) and application (ejbs) layer on a different set of application servers.

       

      What I had in mind was using ha-jndi, so that the wars can find the EJB's, even tough they are on a different machine.

      HA-JNDI also supports round robin JNDI, so when adding machines to the application tier, HA_JNDI should balance load over the different machines.

       

      However, it seems that ha-jndi no longer exists?

       

      1- What is the proposed alternative to HA-JNDI?

      2- Is there anyone who has any experience with n-tier deployements?

       

      Thanks in advance,

      Wouter

        • 1. Re: AS 7.1 HA-JNDI alternative
          Wolf-Dieter Fink Master

          Difficult to answer.

          The implementation of the ejb-client side is different to previous versions.

           

          You should have a look here for examples.

           

          If you use the JBoss specific API there are many posibilities.

          The simple JNDI wrapper with the jboss-ejb-client.properties file can have 1....n different servers. where are the same, different or clustered applications deployed.

          The EJB-client decide which real Bean will be executed depend on the name (ejb:EAR/JAR/distinctName/Bean!Interface).

          Notice that the identifier is the name, so the same ear deployed on two servers might be loadbalanced nevertheless whether they are in a cluster or not)

           

          If you add one server of a cluster to your client environment other member of the same cluster are added automaticaly (as in AS4/5/6).

           

          Regarding your second question.

          YES here are many with n-tier experience but it depends on what you are looking for You have to be a bit more precise