The internals H2O (or how to write a fast server)

Yesterday, I had the opportunity to speak at the HTTP2Conference held in Tokyo.

Until now, I have rather been silent about H2O since I think it is still premature for wild use. But you do not need to worry about such thing in a technology conference, so I happily talked about the motives behind H2O, and its implementation.

IMO the talk should be interesting not only to people working with HTTP server implementations but also to those interested in programming in general, since it covers the common performance pitfalls (or misconceptions as I see) in many server implementations.

Below are the slides and the recorded video of my presentation.

Enjoy!

PS. Please forgive me for the provocative attitude in the questions raised in the last part of the slides. They were intentionally written as such in order to spark discussion at the hall.

H2O - the optimized HTTP server from Kazuho Oku

my talk starts a 3h15m (in Japanese)

Related links:

• github.com/h2o - the repository
• Happy Optimization - my presentation slides re optimization in general (2010)
• HTTP::Parser::XS - slides re HTTP::Parser::XS (Perl binding of picohttpparser)