zzh8829

Joined 11 years ago

Karma
26
Submissions
11
Member since
Nov 2
long time lurker

https://zihao.me

[email protected]

[ my public key: https://keybase.io/zihao; my proof: https://keybase.io/zihao/sigs/QdjmAE9RD4vd1N88uuFApDp2yYvn9PJ_V0StbY1FyMc ]

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Recent submissions

Comment · 2 years ago
47/50 for the grand prize is definitely a hard challenge. The best team in Progress Prize 1 only scored 29/50.
Comment · 2 years ago
https://chess.maxmcd.com/rnbqk3/pppp2pB/2P1p3/1P1P2Bp/3n4/b2...

very cool, made it all the way to a checkmate

Comment · 4 years ago
Looks like Heroku uses NS1 as the upstream DNS provider. you can find the information like this

  dig NS @1.1.1.1 test.herokuapp.com -> fail

  dig @1.1.1.1 test.herokuapp.com -> fail

  dig NS @dns1.p03.nsone.net test.herokuapp.com -> works

  dig @dns1.p03.nsone.net test.herokuapp.com -> works

So my conclusion is that NS1 is having issue responding DNS queries from other DNS servers. Interestingly, there is no public information on heroku being dependent on NS1 or any current outages from NS1 status page.
Comment · 7 years ago
I think the biggest difference is webhosting provider can't scale your php resource up and down infinitely in real time. Your software is not exposed to the server but constrained by it. The idea of serverless is that your service is automatically distributed and not constrained by the capability of some web server.
Comment · 7 years ago
Comment · 7 years ago
Having lived in both China and US/Canada, I would say jd and taobao is far ahead of American Amazon. Some key differentiators include delivery speed, UI/UX, product offerings and the ability to chat with merchants instantly.
Comment · 9 years ago
I am also working on related project. Flash and HTML5 games in chrome are great but they are very far away from the initially promised full blown GTA5, Starcraft and other complex envs. I am in process of remaking the Universe framework for host machine, since running those computation intensive games at reasonable frame is nearly impossible inside docker or virtual machines.
Comment · 10 years ago
I just finished the course last week. I really liked Andrew's teaching style and enjoyed it very much. The work load is light compare to on campus courses at my school. I strongly recommend anyone interested in ML/AI to take the course.

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