Fumiki Takahashi

Hametuha INC.

<a href="https://cloudflare.com" rel="nofollow ugc">CloudFlare</a> is a popular CDN service. They caches static files like <code>.jpg</code>, <code>.css</code> or <code>.html</code>, but they doesn’t cache dynamic pages generated by WordPress without <a href="https://www.cloudflare.com/features-page-rules/must-use-page-rules/" rel="nofollow ugc">Page Rule</a>.
Once Page Rules are set, for exmple, <code>https://examle.com/article/*</code>, every single page will be cached(of course, your permalink structure should be like <code>https://example.com/article/2019/01/01/POST_ID</code>).
This plugin hamecache provides cache control feature. If you update your article, hamecache automatically flush related caches on cloudflare edge location.

hamecache

Page cache plugin by Hametuha. Use cloudflare for distribution.

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.

hamecache vs Purge Cloud Flare