updating the content of the website continuously and pingin in various sbm site could get you cached fast..
If you want to get fast index on Google then do social bookmarking on high traffic social bookmarking sites. like- digg, twitter, facebook, this way you'll get indexed within a day. or you can get indexed in 30 minutes or less. just go to identi.ca and make a group there post new website URL on Group then get indexed with minutes. this is my personal way to get indexed. I hope this will help you Thanks