How to clear a sitecore rendering cache programatically [duplicate]

Question

How can I clear an individual rendering cache from my site on publishing Sitecore item programmatically. I followed below article which did not work for me.

Clear individual Rendering/Component Html cache

Answer 1

I recommend after publish to clear caches from the whole site to make sure there are no caches left. This also clears component level caches. Here is an example code how to achieve this:

var context = SiteContext.GetSite(site.Name);
if (context != null && context.CacheHtml)
{
     context.Caches?.HtmlCache?.Clear();
}

You can hook to publishEnd like this:

  <event name="publish:end">
        <handler type="namespace.HtmlCacheClearer, DLLFileName" method="ClearCache" />
      </event>