hmm, that's an interesting question, I don't know the answer to be honest. are you able to run external scripts on the device? if so, you might be able to install & run ingestr with a CSV destination (which I released literally 2 mins ago), but that seems like a lot of work as well, and will probably be way slower than your C++ application.
I can start a CLI as a separate process. But ingesting to CSV and then reading the CSV would be slow. Maybe it would be better to ingest into DuckDB or in memory in Arrow memory format. If anyone has any other suggestions, I am all ears.
Maybe someone else has another idea?