Eric Mann

If you’re like me, you probably have to wade through a few hundred spammy comments on your blog. It can be annoying, stressful, frustrating, and a waste of time. Beyond that, spammy comments can fill up your database and make it a lot bulkier than it needs to be – particularly if you need to transfer it to a new server.
ClearSpam makes this a lot easier for you by adding a spam counter to the “Right Now” box on the dashboard along with a link that lets you instantly and easily purge spammy comments from the database. The plugin uses WordPress nonce filters, so people won’t be able to use the plugin to delete legitimate comments.

ClearSpam

Painlessly purge spammy comments from your WordPress database to save space.

Astral Internet

neutrall

sleyeur

The Website Accelerator by Astral Internet is a tool that allows you to place certain elements of a site in buffer memory (cache) inside the server. Once the elements are placed buffer of the server, they can be served much faster to people viewing a website. 
The website accelerator maximizes the Nginx caching feature while offering granular configuration for each site. More information concerning the WSA module is available on this blog “<a href="https://www.astralinternet.com/blog/en/no-more-slow-websites/" rel="nofollow ugc">No more slow websites!</a>”.

WSA – Website Accelerator Cache Purge

On servers using the website accelerator by Astral Internet, the module offers the ability to automatically purge the cache when a page is modified.

ClearSpam vs WSA – Website Accelerator Cache Purge