The Search Service extracts content based on the interval that you configure. You can configure the interval when you create the Search Service or update the service properties.
The extraction interval is the number of seconds between each extraction.
The Search Service returns search results from the search index. The search results depend on the extraction interval. For example, if you set the extraction interval to 360 seconds, a user may have to wait up to 360 seconds before an object appears in the search results.