[sajal83]

If the concern is HTTPS overhead, why not use HTTP/2 and send multiple requests?

I think streaming would be useful only if the responses are stateful and it's hard to share it across requests.

[beau]

Even with HTTP/2, sending a GET request is not free. Most of the benefit is that we can show the user results as they come in. Each query gets over 50 responses in random order from DNS, in-memory indexes of zone files, slower fuzzy searches over other data, and so on. Why wait to show them the .com result while .ca resolves?