Oh! Taking that a step further, what if you mmap'd an empty file first, say 1MB of zeroes. Then, just start writing closures to it, one after another. When you

Oh! Taking that a step further, what if you mmap'd an empty file first, say 1MB of zeroes. Then, just start writing closures to it, one after another. When you hit 1MB, use mremap to add another 1MB. And just keep going! The pagefile would become a fossil record of the webserver's access history. The earlier in the file, the older the request, and the less likely it would ever be mapped into physical RAM ever again. On a 64-bit machine with a modern hard drive, you could probably go forever :)