Pinterest moves to HTTP/3

The Backend Engineering Show with Hussein Nasser

English - March 16, 2023 12:49 - 25 minutes - 23.7 MB - ★★★★★ - 5 ratings
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Pinterest moves to HTTP/3 on all their clients and edge CDNs this year. They witnessed interesting gains but not without good lesson learned. The main one was the mismatch of alt-svc vs DNS ttls.
I cover this on the next episode of the backend engineering course.
0:00 Intro
2:00 Moving h2 to h3 through alt-svc
5:00 Why HTTP/3
6:00 HTTP/1 vs HTTP/2
9:00 TCP Head of Line blocking in HTTP/2
11:00 How HTTP/3 addresses HOL
12:15 Connection Migration
13:30 Stream level congestion control
14:10 1-RTT - 0-RTT
15:41 Pinterest challenges moving HTTP/3
19:00 Migration
21:15 Future work
22:30 Summary

article https://medium.com/pinterest-engineering/pinterest-is-now-on-http-3-608fb5581094

Fundamentals of Backend Engineering Design patterns udemy course (link redirects to udemy with coupon) https://backend.husseinnasser.com