Displaying static content - risky?

[ukss1984]

In an attempt to improve the speed of our site, We have installed Cache_Lite extension for PHP. Its a PEAR based system which converts dynamic pages into static pages.

The system is set to delete the temp files every 15 minutes, at which point any changes / new content will appear on the system.

I don't see any risk of doing this but thought it safe to double check if there could be any impact on Google by doing it?

[Highland]

We use caching and have seen no ill effects. I seriously doubt spidering robots will be hitting your site's pages every 15 minutes.

One thing you might want to look into is the "If Modified Since" header, which could help notify Google that your content has changed

http://www.seomoz.org/blog/whiteboard-interview-googles-matt-cutts-on-redirects-trust-more