The main problem with http2 push and why it’s pointless is that it’s not cache aware. So you’re pushing unrequested data to everyone regardless. h2o tries to

The main problem with http2 push and why it’s pointless is that it’s not cache aware. So you’re pushing unrequested data to everyone regardless. h2o tries to solve this problem with a special cookie. More here: http://blog.kazuhooku.com/2015/12/optimizing-performance-of-multi-tiered.html http://blog.kazuhooku.com/2015/12/optimizing-performance-of-... But without something like that it’s a feature that will never really gain traction.