I guess the original poster had some performance requirements that the standard lazy IO approaches weren't satisfying. I think he may well have gotten a few goo

I guess the original poster had some performance requirements that the standard lazy IO approaches weren't satisfying. I think he may well have gotten a few good answers there, but I really wish he would have tested them out and reported back about which (if any) worked for him! maybe I'll test them out and do a little blog post on the subject