Using ServletOutputStream to write very large files in a Java servlet without memory issues

Question

I am using IBM Websphere Application Server v6 and Java 1.4 and am trying to write large CSV files to the ServletOutputStream for a user to download. Files are

Answer 1

I'm also not sure if flush() on ServletOutputStream works in this case, but ServletResponse.flushBuffer() should send the response to the client (at least per 2.3 servlet spec).

ServletResponse.setBufferSize() sounds promising, too.