Hacker News: osi

New comment by osi in "Model Once, Represent Everywhere: UDA (Unified Data Architecture) at Netflix"

osi — Wed, 18 Jun 2025 03:36:14 +0000

UDA enables both approaches. each has its place.

New comment by osi in "Phones track everything but their role in car wrecks"

osi — Sat, 27 Jan 2024 04:42:26 +0000

that’s been a problem longer than phones. worse, maybe, but not new.

New comment by osi in "Wendelstein 7-X: Gigajoule energy turnover generated for eight minutes"

osi — Mon, 14 Aug 2023 04:20:50 +0000

bravo sir very well explained.

New comment by osi in "The magic of small databases"

osi — Sun, 29 Jan 2023 04:26:00 +0000

i worked at a then-web3.0 startup in the 00’s that had built something that could have been pivoted into this, but instead the CEO wanted to be like Digg instead.

the commercial community of practice is small for sure.

New comment by osi in "What is property-based testing? (2016)"

osi — Mon, 20 Sep 2021 02:39:31 +0000

i use property based testing for the external api of my business domain service.

yes, the test code is an “oracle”, knowing what the service _should_ be doing. it’s a parallel implementation of the logic, highly geared towards the use-case of testing.

New comment by osi in "Event Sourcing (2005)"

osi — Thu, 12 Aug 2021 22:41:09 +0000

We're using jqwik's stateful testing to achieve this, https://jqwik.net/docs/current/user-guide.html#stateful-test...

It's essentially as you described.

Crux – open-source bitemporal database

osi — Sat, 20 Apr 2019 05:25:07 +0000

Article URL: https://juxt.pro/crux/index.html

Comments URL: https://news.ycombinator.com/item?id=19704949

Points: 3

# Comments: 0

New comment by osi in "The two questions I ask every interviewer"

osi — Wed, 01 Nov 2017 12:57:54 +0000

agreed. if it is a "2 hour" project, have that be part of the on-site interview (with the expectation that people might not complete it)

New comment by osi in "Do we need a third Apache project for columnar data representation?"

osi — Tue, 31 Oct 2017 18:30:33 +0000

and _even if it were_, the ASF doesn't mind. contributors are free to dedicate their time to whatever they choose.

New comment by osi in "The Corrosion of High School Debate"

osi — Tue, 10 Oct 2017 17:13:33 +0000

ah, Student Congress. I did that and loved it too. I enjoyed it more for learning how to effectively troll, since I wasn't as good as the "politics" part needed to win.

New comment by osi in "Epsilon: Graphing calculator operating system"

osi — Thu, 31 Aug 2017 12:53:32 +0000

heh, i remember writing a fake "memory clear" program on my TI back in 1994/1995 (i don't remember the exact model).

New comment by osi in "Java.math.BigDecimal toString is not thread safe"

osi — Wed, 30 Aug 2017 13:29:39 +0000

the OP observed the problem on a raspberry pi. sounds like it could be a problem with the ARM JVM that is being used.

New comment by osi in "The Marketing Behind MongoDB"

osi — Tue, 29 Aug 2017 15:49:29 +0000

Also lost to history is 10gen's original intent of being more of a complete platform, with Mongo just being the storage layer. Business Insider ran on that platform. Some details in https://www.usv.com/blog/10gen

(A friend of mine was VP Eng there and was trying to recruit me to work on the larger platform, but as Mongo started gaining traction they dropped the other parts to focus on that)

New comment by osi in "Ask HN: Do you lift?"

osi — Mon, 17 Jul 2017 13:00:30 +0000

i train brazilian jiu jitsu 4-5x a week. most of Mon-Thurs evening for classes, then sometimes an open mat session on the weekend.

when i started the goal was weight management, as i was getting tubby as i was getting older. that part worked. now (9 years later), it is for fun.

New comment by osi in "ESPN Can't Afford to Go on Like This"

osi — Mon, 01 May 2017 12:39:00 +0000

for me, it wasn't just the ESPN cost, which was buried in the package. it was also the "regional sports fees" that Comcast lists as separate line items and have very obvious increases.

Attacking Machine Learning with Adversarial Examples

osi — Fri, 28 Apr 2017 13:21:26 +0000

Article URL: https://blog.openai.com/adversarial-example-research/

Comments URL: https://news.ycombinator.com/item?id=14219118

Points: 1

# Comments: 0

New comment by osi in "Have We Forgotten about Geometry in Computer Vision?"

osi — Fri, 28 Apr 2017 13:20:56 +0000

I was just reading https://blog.openai.com/adversarial-example-research/ and it struck me that an understanding of geometry might help. For the examples and scenarios cited, the geometries of the two items would be different (sometimes markedly, sometimes less, like washer-vs-safe).

New comment by osi in "New Features Coming in PostgreSQL 10"

osi — Mon, 10 Apr 2017 19:47:08 +0000

i helped build a triple store on top of postgresql back in '06-'08. company is gone so i don't know where the IP ended up, but it was a good foundation. we were competitive with the other players at the time.

New comment by osi in "How we secretly introduced Haskell and got away with it"

osi — Fri, 03 Mar 2017 15:41:11 +0000

makes me wonder how long they would have lasted had the initial implementation been done simpler (ie, not in their PyDatalog fork).

New comment by osi in "Rust vs. Go"

osi — Wed, 18 Jan 2017 22:02:43 +0000

dunno- just copying what was in the original article :)