Derrick Tennant

I needed a persistent object cache while doing work on a budget hosting provider. A lot of the other file-based caching plugins were either bundled with other things I didn’t need (W3 Total Cache), or were old and broken.
On the sites I’ve tested this with, that have slow database servers, I have noticed an increase in page generation times of about 2x. On the other hand, for sites that have fast database servers it can actually increase page generation time. Whenever possible, I’d recommend using Memcached, Redis, or your other quality cache of choice.
I’ve been heavily influenced by <a href="https://wordpress.org/plugins/redis-cache/" rel="ugc">redis-cache</a>, <a href="https://wordpress.org/plugins/wp-redis/" rel="ugc">wp-redis</a>, <a href="https://wordpress.org/plugins/w3-total-cache/" rel="ugc">W3 Total Cache</a>, and <a href="https://github.com/Automattic/wp-memcached" rel="nofollow ugc">wp-memcached</a> to name a few.

FOCUS Cache

File-based Object Cache is Utterly Slow: An Object Caching Dropin for WordPress that uses the local file system.

Till Krüss

Purge the <a href="http://nginx.org" rel="nofollow ugc">Nginx</a> cache (FastCGI, Proxy, uWSGI) automatically when content changes or manually within WordPress.
Requirements:
<ul>
<li>The <a href="https://codex.wordpress.org/Filesystem_API" rel="nofollow ugc">Filesystem API</a> needs to function without asking for credentials.</li>
<li>Nginx and PHP need to run under the same user, or PHP’s user needs write access to Nginx’s cache path.</li>
</ul>

Nginx Cache

purge_zone() need to check that rmdir() can purge all cache files or not 

Not so good

Does one thing and does it well. Nice work! 

This allows me to simply use fastcgi_cache + this plugin and be done with it, versus much larger plugins like WP Super Cache.

Perfect

Awesome

Doesn't purge Hindi encoded URL permalink 

Great plugin with some minor issues

Purge the Nginx cache (FastCGI, Proxy, uWSGI) automatically when content changes or manually within WordPress.

FOCUS Cache vs Nginx Cache