I wrote the original integration, which required updating some Racket libraries to support HTTP pipelining, chunked transfer encoding, and streaming JSON serial

I wrote the original integration, which required updating some Racket libraries to support HTTP pipelining, chunked transfer encoding, and streaming JSON serialization :) My version was near real time, with a 30-60 second batching delay IIRC, and could still be what powers it for all I know.