scaling? databases? this is serving up some static content, and a string lookup in a hash table. a single cheap vps with 768mb of ram should be able to handle

scaling? databases? this is serving up some static content, and a string lookup in a hash table. a single cheap vps with 768mb of ram should be able to handle thousands of requests/second without issue. (50 chars email average + 2 * 4 byte pointers) * 10M entries => 512mb ram (and with some noddy splitting by email domain you could probably quarter that)