Options: Install a caching plugin for Wordpress. Copy the output of Wordpress for that blog post to a static .html file and use mod_rewrite to point requests

Options: Install a caching plugin for Wordpress. Copy the output of Wordpress for that blog post to a static .html file and use mod_rewrite to point requests for the post to that file. Turn off plugins you don't need. Install a reverse proxy cache (such as Varnish) in front of Wordpress.