从运行Java Jersey Rest API的HTTP服务器传输大文件

I am writing a web service using Java JDK 1.7 and Jersey Web service Framework. One of the things I need to provide is a way to allow authenticated clients to download certain large data files ( 1-3 GB). Ideally I would like this to be a pause and resume type downloadable option. I tried the jersey multi-part API and was able to get it to work on my client machine upto 400 MB but beyond that it ran into out-of memory issues. I am also worried that the server might fail when faced with simultaneous download requests. Any thoughts on how this can be done? Is Netty an option? Any pointers on how Netty can be integrated into a existing Jersey based web service? Are there other frame works available to help accomplish this? I do have to use java for the web service. Any pointers will be helpful. I am writing a web service using Java JDK 1.7 a