I use webworkers to run an in-memory streaming pivoting engine (compiled from C++ to wasm) to build real-time Tableau-like dashboards that run fully in the brow

I use webworkers to run an in-memory streaming pivoting engine (compiled from C++ to wasm) to build real-time Tableau-like dashboards that run fully in the browser (which runs fairly well for 10M row datasets or less). Network IO and the compute is handled in the webworker, which allows the main UI thread to remain responsive.