Last-Modified Header ETag Header Cache-Control Header Session Cache Limiter SEO Implications
Besides server-side caching that we have described in the previous sections, Web applications may also exploit client-side caching to save the time for generating and transmitting the same page content.
To use client-side caching, you may configure yii\filters\HttpCache as a filter for controller actions whose rendering result may be cached on the client-side. HttpCache only works for GET and HEAD requ