node/ROOT.xml

<Context docBase="../../webapps/web-laboratory.war">
        <Parameter name="config.file" value="/etc/web-laboratory/application.conf"/>
       <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
            memcachedNodes="n1:memcached_db1:11211,n2:memcached_db2:11211"
            sticky="false"
            sessionBackupAsync="false"
            lockingMode="all"
            requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css)$"
            transcoderFactoryClass="de.javakaffee.web.msm.JavaSerializationTranscoderFactory"
       />
</Context>