ExpressionEngine is Fast. Really Fast. ExpressionEngine raises the bar for dynamic systems by utilizing server resources at a level almost on-par with static pages. Through our attention to detail, the highest levels of coding practice, and our absolute commitment to minimizing server impact, ExpressionEngine can handle huge traffic loads while remaining totally dynamic. If that's not enough, we offer the most advanced data caching system available. In fact, ExpressionEngine has three independent data caching systems: Query Caching, Tag Caching, and Template Caching. You can cache the output of your database, entire pages, or even sections within pages. Our caching systems are so advanced, in fact, that you can even cache pages that must remain dynamic, like your user comment page. ExpressionEngine will intelligently refresh the data cache after user input. For the first time, you can achieve static server loads - and static page load speeds - from a fully-dynamic system. No other content management system, other than those costing tens, to hundreds of thousands of dollars achieve this level of performance and scalability.