Wordpress has about 20 plugins which you can use to increase the performance of your blog, make it load faster, fine tune the database for faster retrieval of information etc. Here are the 5 best wordpress plugins which you can use to increase your site performance -

1. Wp Super Cache - Its a must have plugin for any site which gets spikes in traffic, say sites which often get dugg or fark or links through similar high traffic sources. WP Super Cache plugin generate static html files instead of typical wordpress posts, under heavy load, the static files gets served which reduces the load on apache and mysql database preventing the site going down.

2. CDN Tools - This is a very new plugin but I feels can play very important part in improving your site performance. Using this plugin, you can load heavy ajax and other libraries from google repository which reduces the load time of the site drastically.

3. WP DB Optimizer - There are couple of wordpress database optimization plugins available and I felt to chose this one. This plugin fine tunes your database for better performance under load.

4. WP Tuner - Wp Tuner is another plugin built specifically to improve wordpress performance. The plugin provides you an interface where you can set various settings which suits your blog and server.

5. WP Widget Cache - WP Widget cache is a plugin which can be used with wp cache plugin. It caches the widget code significantly reducing the number of mysql calls. You can check the plugin page to learn more about it.

I don’t think you will be needing any other wordpress plugin to increase performance of your blog, this is enough.

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