Currently Vanilla-WP runs with WP-Super-Cache enabled, and my abandoned Database Cache disabled. The fun part of WP-Super-Cache as caching plugin is, it allows the usage of plugins. Yes, a plugin for a plugin 🙂 . One of those plugins is WPSCMin, by Joel Hardi.
WPSCMin for WP-Super-Cache utilizes the Minify library in PHP, minifying the generated supercache files. Using this, your WP-Super-Cache supercache files are smaller, and delivered to clients faster. For every supercache file kilobytes of data and size are knocked off thanks to the compression process.
From my Windows command prompt, before and after enabling WPSCMin:
Directory of \path\to\wp-content\cache\supercache\www.vanilla- wp.org\save-mysql-database-cache-wordpress 06/28/2016 11:02 AM <DIR> . 06/28/2016 11:02 AM <DIR> .. 06/28/2016 11:02 AM 39,131 index-https.html 06/28/2016 11:02 AM 9,612 index-https.html.gz
Directory of \path\to\wp-content\cache\supercache\www.vanilla- wp.org\save-mysql-database-cache-wordpress 06/28/2016 11:05 AM <DIR> . 06/28/2016 11:05 AM <DIR> .. 06/28/2016 11:05 AM 36,012 index-https.html 06/28/2016 11:05 AM 8,972 index-https.html.gz
This is not a real big difference, but saving tens of kilobytes is possible.
If you’d like to know more about how to Minify WP-Super-Cache files: