A simple parallelized file downloader using Virtual Threads.

Example

Suck.ofDefault().downloadParallelized(
   HttpRequest.newBuilder(URI.create(".....")),
   Path.of("....."),
   new ProgressAwareDownloadListener(retries));

• This is a PoC, or toy. Not intended for production use.
• Uses mmap() and virtual threads.
• Can be used as a library
• Believe or not, it's quite fast, even comparable to aria2c.
• Needs to be optimised.

A native image is also included in the release, but it's slower than running in hotspot. (SerialGC is to blame, I think)

Probably won't do any of it.

• Replace ModernHTTP which stresses the GC
• Try regular FileChannel and see if mmap is any faster
• Replace virtual threads?