Caching your Wordpress blog can help you to save the resources on your server. Wordpress caching can improve your website speed and thereby increase your search engine ranking. People who host their blogs on shared servers should implement Wordpress caching. The best caching plugin is the W3 Total Cache which is suitable for people who don't want to handle the nginx configuration. The WP Super Cache is another Wordpress caching plugin but it does not cache the database and minifying operations.