</p>
<p>This parameter controls how long cached information is used after a file has been cached. An entry older than the maximum age is replaced by a new entry for the same file. If your content changes infrequently, increase this value for improved performance.</p>
<p>The optimum maximum age depends on whether existing files are modified regularly. For example, if files are modified four times a day at regular intervals, consider setting the maximum age to 21600 seconds (6 hours). Otherwise, consider sett