Best way to use suffix in AEM URLs

It is better to use the suffix with selectors only that will help the dispatcher when flush cache.

Ex:-

<resource path>/results.html

<resource path>/results.html/suffix(Not recommended )

<resource path>/results.html/suffix.suffix1  (Not recommended )

<resource path>/results.slelector.html/suffix(Recommended)

<resource path>/results.slelector.html/suffix.suffix1(Recommended)