Why do you assume that 565KB even matters? I've been building loads of financial software, both back and front ends. In frontend world it, sadly is quite commo

Why do you assume that 565KB even matters? I've been building loads of financial software, both back and front ends. In frontend world it, sadly is quite common to send that amount of "data" over wires before even getting to actual data And in backends it's really a design decision. There's nothing faster than a Cron job parsing echange rates nightly and writing them to a purpose designed todays-rates.json served as static file to your mobile, web or microservices apps. Nothing implies your mobile app has to consume this zip-csv_over_http