On: My favourite API is a zipfile on the European Cent...

[calpaterson]

> working ETag/If-Modified-Since support

I completely agree and csvbase already implements this (so does curl btw), try:

    curl --etag-compare stock-exchanges-etag.txt --etag-save stock-exchanges-etag.txt https://csvbase.com/meripaterson/stock-exchanges.parquet -O