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umitanuki

umitanuki on Hacker News

Re:OpenCDBC: How come 2PC is scalable? on Tuesday March 15, 2022 @06:57AM (#30683849)
None of the blockchains use 2PC. The blocks may get discarded after a while. Sort of eventual consistency

OpenCDBC: How come 2PC is scalable?

Posted by umitanuki on Monday March 14, 2022 @08:01AM
from the self-post dept.

https://github.com/mit-dci/opencbdc-txWhile I love it discusses about linearizability/serializability tradeoffs with different architecture, I'm a bit puzzled how come they chose 2PC for scalability. In my opinion, 2PC has been a bad idea for scalable distributed systems, and generally speaking the design decision that has turned to be good (whether or not this was intentional) by bitcoin was...

( Read More... | 2 comments | on HN )
Re:Ask HN: Who is hiring? (July 2019) on Tuesday July 02, 2019 @12:19AM (#20332104)
Alpaca, a YC W19 building free stock trading API ( https://alpaca.markets/), is hiring a Front end/Fullstack Engineer, 3-5 years strong React and/or Go. Located in Downtown San Mateo a few blocks from Caltrain.

Anyone with passion around API/dev tools/trading would be great. We are big fan of open source and your github profile is resume.

Last chance to be a member of the fast moving one-team company (~15 ppl, pre-A/A)!

email directly to CTO: [email protected]

Re:Show HN: HFT-Like Trading Algo in 300 Lines of Python on Wednesday January 30, 2019 @10:05AM (#19035562)
Thats a general critique for published trading algorithms I've ever seen millions of times, but if you kindly take a close look at it, it accepts which stock to trade as parameter, and I'm running it with some other stock than the default parameter.
Re:Show HN: HFT-Like Trading Algo in 300 Lines of Python on Tuesday January 29, 2019 @05:27PM (#19030456)
As we build our API trading brokerage, we wanted to show something like HFT algo can be built quickly. Chatting with an ex-HFT guy, I quickly built this and put it in GitHub, so anyone can run it. 261 lines of python. Check out https://github.com/alpacahq/example-hftish for the code and a bit of explanation on medium https://medium.com/automation-generation/hft-like-trading-al...
Re:Show HN: Stock Trading from Google Spreadsheet on Wednesday December 05, 2018 @11:50PM (#18615505)
Principal number one; don’t overcomplicate yourself. Keep it simple, stupid
Re:Show HN: Stock Trading from Google Spreadsheet on Wednesday December 05, 2018 @12:25PM (#18610339)
And by Evan https://medium.com/automation-generation/commission-free-tra...
Re:Show HN: Stock Trading from Google Spreadsheet on Wednesday December 05, 2018 @12:17PM (#18610280)
You will access to the historical data. https://docs.alpaca.markets/web-api/market-data/ working to cover more
Re:Show HN: Stock Trading from Google Spreadsheet on Wednesday December 05, 2018 @12:16PM (#18610263)
We are working hard to support non-US users!
Re:Show HN: Stock Trading from Google Spreadsheet on Wednesday December 05, 2018 @12:12PM (#18610209)
I can see that. Traders in Wall Street are too practical to build something maintainable. Now G Sheet brings the same power but to software developers this time.
Re:Show HN: Stock Trading from Google Spreadsheet on Wednesday December 05, 2018 @12:06PM (#18610155)
https://alpaca.markets/

Show HN: Stock Trading from Google Spreadsheet

Posted by umitanuki on Wednesday December 05, 2018 @04:13AM
from the show-hn dept.

I've shared copy-able G sheet with full script that calls stock trading API. https://docs.google.com/spreadsheets/d/1RLvSmDEfS7U2OrqlUYvv...I'm sure many of you guys do some trick over stocks in spreadsheet. Full explanation: https://medium.com/automation-generation/manage-your-stocks-...

( Read More... | 84 comments | 281 points | on HN )
Re:Ex-Goldman Sachs Programmer Sergey Aleynikov's Conviction Upheld in... on Friday May 04, 2018 @11:59AM (#16995596)
Law is definitely way behind
Re:Alpaca: Algo Trading Commission Free Arrives on Saturday April 28, 2018 @09:47AM (#16947613)
Thank you! Expecting to go in live this summer.
Re:Alpaca: Algo Trading Commission Free Arrives on Thursday April 26, 2018 @01:38PM (#16933918)
Thank you! Make sure you are on the waitlist!