将二进制文件存储在GAE / J + Google DataStore上

I'm building application on Google AppEngine with Java (GAE/J) and all my data will be stored in Google DataStore. Now, what if I want to save some binary file, let's say Images (JPG, PNG, etc), DOC, TXT, Video Files how do i deal with these? Or what if i want to stream video files (SWF) where and how should i store those files and when I redeploy my app i don't loose any data.I'm building application on Google AppEngine wi