There are plenty of awesome caching plugins available for WordPress. We have all heard about W3 Total Cache and WP Super Cache. Both of those have a lot going for them. WP Widget Cache is worth exploring if you would like to cache your blog widgets. It can reduce SQL queries and speed up your website to offer a better experience to your visitors.
WP Widget Cache can cache the output of your blog widgets but puts you in control. You can choose the appropriate setting for each widget. This is especially useful if you have plenty of widgets on your sidebar. Don’t want to cache the output of certain plugins? This plugin has you covered.
WP Widget Cache does not perform miracles. But it could speed up your website, especially if you get too many hits on your site or have a cheap hosting plan. This is a free plugin.