Codeigniter caching

[eluser]jplanet[/eluser]
[quote author="ehicks727" date="1219532604"]
Are you having a performance problem right now? What is your reason for implementing caching?[/quote]

The site is on Bluehost, which has a rather draconian policy of taking your site offline if it goes above their very limited CPU usage restrictions. So, the site was beautifully coded and running very fast, but the site is fairly high volume, with about 1000 visitors per day, so caching some of the more query-intensive pages helps prevent the site from being taken offline.

[quote author="ehicks727" date="1219532604"]
What SEO issues do you think this would cause? Do you have a specific problem that you think may happen?[/quote]

I don't think there would be any, but my client's business relies 100% on SEO standing, and has made a big investment in that area. So, if let's say for instance that caching meant that CI sent a redirect header of some sort before rendering the page, that page could fall off of the search engine result pages -- I'm sure that this isn't the case, but it never hurts to be sure...