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    <div class="moz-cite-prefix">Hi Ashwin,<br>
      <br>
      take a look at mariaDB Galera Multi-Master Cluster 10.0.15. <br>
      I run 2x Cluster and each Cluster with 6x DB Nodes.<br>
      A total of 12x DB Server<br>
      <br>
      <h2>mariaDB Galera Multi-Master Cluster</h2>
      <h2>Features
      </h2>
      <ul start="1">
        <li>Synchronous replication
        </li>
        <li>Active-active multi-master topology
        </li>
        <li>Read and write to any cluster node
        </li>
        <li>Automatic membership control, failed nodes drop from the
          cluster
        </li>
        <li>Automatic node joining
        </li>
        <li>T<b>rue parallel replication, on row level !!!!!!!!!!!!!!!</b>
        </li>
        <li>Direct client connections, native MySQL look &amp; feel
        </li>
      </ul>
      <h2 class="anchored_heading" id="benefits">Benefits</h2>
      <p>The above features yield several benefits for a DBMS clustering
        solution, including:</p>
      <ul start="1">
        <li>No slave lag
        </li>
        <li>No lost transactions
        </li>
        <li>Both read and write scalability
        </li>
        <li>Smaller client latencies
        </li>
      </ul>
      <br>
      source:
<a class="moz-txt-link-freetext" href="https://mariadb.com/kb/en/mariadb/documentation/replication/galera/what-is-mariadb-galera-cluster/">https://mariadb.com/kb/en/mariadb/documentation/replication/galera/what-is-mariadb-galera-cluster/</a><br>
      <br>
      Regards<br>
      Rainer Piper<br>
      <br>
      <br>
      <br>
      Am 03.01.2015 um 07:38 schrieb Ashwin Rath:<br>
    </div>
    <blockquote
cite="mid:CAA_Nwu7DmQnQMVJr3zY23Jti1siPoDWFPWMJQE2N63AcYoozFw@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>Thenk you all. My main concern was that master master
          replication is something that is used for a dual redundant
          deployment . Just not sure if it is reliable with multiple
          boxes . I have read about people having good luck with xtradb
          (percona) for MySQL but i think the general opinion is in
          favor of a cluster than having master-master replication with
          'sharded' data.<br>
          <br>
        </div>
        @Luis : Yes they are all on the same LAN. <br>
        <br>
        <br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Sat, Jan 3, 2015 at 2:26 AM, Florent
          Krieg <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:flokrrr@gmail.com" target="_blank">flokrrr@gmail.com</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <p dir="ltr">Hi Ashwin,</p>
            <p dir="ltr">I don't know very well Postgres but I achieved
              pretty much the same (horizontal scaling) with a MySQL
              cluster. Replication is a bit painful to setup and to
              maintain (especially master master, including db
              desynchronization when crashes occur and so on). I would
              go for a cluster, almost endlessly scalable and very very
              reliable. It is more costly to setup but I think it is
              worth the pain.</p>
            <p dir="ltr">My feelings, I don't pretend to be a reference
              though :)</p>
            <p dir="ltr">Florent</p>
            <div class="gmail_quote">Le 2 janv. 2015 20:42, "Ashwin
              Rath" &lt;<a moz-do-not-send="true"
                href="mailto:ashwinrath@gmail.com" target="_blank">ashwinrath@gmail.com</a>&gt;
              a écrit :<br type="attribution">
              <blockquote class="gmail_quote" style="margin:0 0 0
                .8ex;border-left:1px #ccc solid;padding-left:1ex">
                <div>
                  <div class="h5">
                    <div dir="ltr">
                      <div>
                        <div>
                          <div>Hi All<br>
                            <br>
                          </div>
                          I am trying to scale FS by having individual
                          nodes running FS that have the core in
                          Postgres. The idea is to have any number of FS
                          boxes behind a load balancer depending on the
                          load.<br>
                          <br>
                        </div>
                        Just wanted to ask if master master replication
                        is reliable for say 10 FS nodes holding presence
                        as well as session info ?<br>
                        <br>
                      </div>
                      or would it just bea better idea to build a highly
                      available postgres sql cluster and point all FS to
                      it ?<br>
                      <div>
                        <div>
                          <div><br clear="all">
                            <div>
                              <div><br>
                                -- <br>
                                <div>Ashwin Kumar Rath<br>
                                </div>
                              </div>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                    <br>
                  </div>
                </div>
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        </div>
        <br>
        <br clear="all">
        <br>
        -- <br>
        <div class="gmail_signature">Ashwin Kumar Rath<br>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
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    </blockquote>
    <br>
    <br>
    <div class="moz-signature">-- <br>
      <b>Rainer Piper</b>
      <br>
      Integration engineer
      <br>
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      <br>
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