webrangers

It clears whole CloudFlare cache for desired domain. 
Purge is done from WordPress admin panel or plugin’s page. Current version contains functionality which purges individual files by URL and clears CloudFlare cache after Save Post action.
THINGS YOU NEED TO KNOW:
<ul>
<li>Whenever you get error clearing the cache alert popup appears with CloudFlare Api response.</li>
<li>This version allows you to purge whole CF cache and specific files by their urs.</li>
<li>Clear cached files to force Cloudflare to fetch a fresh version of those files from your web server. You can purge files selectively or all at once.</li>
<li>Purging the cache may temporarily degrade performance for your website.</li>
</ul>

Purge Cloud Flare

Purge CloudFlare makes clearing CloudFlare cache as simple as one click.

manatarms

icyapril

jwineman

thellimist

patrickmeenan

Integrates with the “<a href="https://github.com/cloudflare/worker-examples/tree/master/examples/edge-cache-html" rel="nofollow ugc">Edge Cache HTML</a>” Cloudflare Worker to edge-cache the generated HTML for anonymous users (not logged-in) resulting in huge performance gains, particularly on slower hosting.

Cloudflare Page Cache

Adds support for caching pages on Cloudflare and automatic purging when content changes.

Purge Cloud Flare vs Cloudflare Page Cache