Cache Functions Suggestions

[eluser]Paul Burdick[/eluser]
I recall that years ago that there were reports of problems with filemtime, but I cannot find anything about that now nor have experienced any problems myself in recent memory. Perhaps the biggest problem with filemtime() is that a great number of requests can happen in a second. My original idea to solve this problem was similar to this.

Eliot's last suggestion on page one is a helpful change and we were thinking of including it in the next version of CI. However, we want to try some other approaches (like the link above and Eliot's suggestion on page 2) with rigorous testing first before we put in a solution. Like Edemilson Lima says, this requires more investigation.