Newly added resources have to be indexed before they appear in Content Search results. This automatic indexing process happens in the background and therefore newly added resources might not be immediately available for Content Search. Indexing frequency and initial startup delay for indexing can be configured in <indexingConfiguration> element in $GREG_HOME/repository/conf/registry.xml as shown below. The indexers that implement the indexer interface for a relevant media type are also configured here and new indexers can be configured too.
<indexingConfiguration>
<startingDelayInSeconds>300</startingDelayInSeconds>
<indexingFrequencyInSeconds>60</indexingFrequencyInSeconds>
<!-- location storing the time the indexing took place-->
<lastAccessTimeLocation>/_system/local/repository/components/org.wso2.carbon.registry/indexing/lastaccesstime</lastAccessTimeLocation>
<indexers>
<indexer class="org.wso2.carbon.registry.indexing.indexer.MSExcelIndexer" mediaTypeRegEx="application/vnd.ms-excel"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.MSPowerpointIndexer" mediaTypeRegEx="application/vnd.ms-powerpoint"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.MSWordIndexer" mediaTypeRegEx="application/msword"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.PDFIndexer" mediaTypeRegEx="application/pdf"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.XMLIndexer" mediaTypeRegEx="application/xml"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.XMLIndexer" mediaTypeRegEx="application/(.)+\+xml"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.PlainTextIndexer" mediaTypeRegEx="text/(.)+"/>
<indexer class="org.wso2.carbon.registry.indexing.indexer.PlainTextIndexer" mediaTypeRegEx="application/x-javascript"/>
</indexers>
<exclusions>
<exclusion pathRegEx="/_system/config/repository/dashboards/gadgets/swfobject1-5/.*[.]html"/>
<exclusion pathRegEx="/_system/local/repository/components/org[.]wso2[.]carbon[.]registry/mount/.*"/>
</exclusions>
</indexingConfiguration>