My personal DB solution actually averages 45 GiB / second on my laptop on a single thread and scales 1-1 with threads. It's way faster than SQLite. This is painfully mediocre performance.

You have to make engineering trade-offs for this, though. In my case, you can only recover 1 KiB records. It doesn't support compression. And you can only write to /dev/null.

To read data from this DB (which I built with command-line tools any Unix has), run:

   dd if=/dev/zero of=/dev/null bs=1K count=${count}

You can vary the $count parameter to get more data.