Improving the site performance by caching translation files using the WordPress standard cache mechanism.
The MO Cache provides simple and fast caching of the translation MO files using the WP Object Cache mechanism. This plugin is necessary to be used persistent caching plugin, otherwise you can not benefit from this plugin.
For localized WordPress, which was newly installed, the loading time of translation files accounts for 70% of the entire processing time. You can make this process 3 times faster by just installing this plugin.