Index Strategy

Default Index Config

<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/">
  <sitecore>
    <contentSearch>
      <indexConfigurations>
	      <indexUpdateStrategies>
		      <intervalAsync3Hour type="Sitecore.ContentSearch.Maintenance.Strategies.IntervalAsynchronousStrategy, Sitecore.ContentSearch">
			      <param desc="database">web</param>
			      <param desc="interval">03:00:00</param>
			      <CheckForThreshold>true</CheckForThreshold>
		      </intervalAsync3Hour>
	     </indexUpdateStrategies>
	    </indexConfigurations>
    </contentSearch>
  </sitecore>
</configuration>