Manual:$wgResourceLoaderStorageEnabled/ja

詳細
If set to true, ResourceLoader modules are cached in localStorage in modern browsers. This allows invalidating a module that has been updated without invalidating the other modules, even if they are all loaded as a single minified-concatenated file.

This will speed up page loading on wikis where the JS code changes frequently. This feature is enabled on Wikipedia but disabled in MediaWiki by default.