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ucarion

HN member
Joined
Sat, Apr 06, 2013, 4:00 PM UTC
HN karma
1,430
Public activity
317 items

About ucarion

Cofounder/CTO at Tesseral (YC W24). Formerly at Segment and Gem.

ulysse.carion@tesseral.com

Recent public activity

  1. comment
    Comment #49009809

    It does get at what I'm talking about. But I've seen retrying in this situation lead to worsening the situation, because your basic problem is two hot paths conflicting with each o…

  2. comment
    Comment #49009284

    Do folks have any thoughts on ways of avoiding deadlocking access patterns? In a codebase where folks are sort of adding ad-hoc endpoints left and right, it's hard to avoid the cas…

  3. comment
    Comment #48163346

    > I do not agree that slice() should operate on extended grapheme clusters. Don’t lump the grapheme cluster/scalar value split in with the sins of UTF-16 and its unreliable code po…

  4. comment
    Comment #47987958

    In old-school chess AIs, zugzwang is also of interest because it can break null-move pruning[0], which is a way to prune the search tree. "Null move" just means "skip your turn", a…

  5. comment
    Comment #47551886

    Leads me to discover: https://www.twitch.tv/chat_loadtest_01 ... neat!

  6. comment
    Comment #47173276

    I've almost never needed any of these, but there's all sorts of weird redirections you can do in GNU Bash: https://www.gnu.org/software/bash/manual/bash.html#Redirecti...

  7. comment
    Comment #46569141

    It is news to me that manipulating ASCII art is something AI can do well! I remember this being something LLMs were all particularly horrible at. But I just checked and it seems to…

  8. comment
    Comment #46029599

    Eddie Izzard was joking in 1998 about the "The" and the prohibited names for The City ( https://youtu.be/QRB_GhLXCds?si=R4kYkodzvYDxe33H&t=276 ), so it's probably been like this fo…

  9. comment
    Comment #45066459

    For those unfamiliar: https://news.ycombinator.com/item?id=26998308 ... It's basically a bunch of posts that 'dang and 'tomhow (others too? idk) think are underrated, so it tends t…

  10. comment
    Comment #45015599

    For others, I'm sure parent knows: OKLCH is largely a bugfix for CILEAB. Both try to make a color space where even steps feel evenly spaced to a human. But CIELAB had procedural fl…

  11. comment
    Comment #44965029

    Kind of moot anyway; 100x zoom is equivalent to a 2400mm lens (with no stabilization assist). If you can hand-aim that on target, you're an elite marksman.

  12. comment
    Comment #44842974

    Seems their IG has some of these, including the shot from the article: https://www.instagram.com/tripodtales/p/C8hRS0ctzCp/ Factory Butte: https://www.instagram.com/tripodtales/p/C…

  13. comment
    Comment #44839183

    > Into the Past by Jim Hildreth The area in this photo -- the Caineville Mesa, Factory Butte, "Long Dong Silver" (I'm not aware of a more polite name) -- is some of the strangest l…

  14. story
  15. comment
    Comment #44638935

    Since we both worked there: I can think of a few places at Segment where we'd have added more reporting/analytics/search if it weren't such a pain to set up a OLAP copy of our cont…

  16. comment
    Comment #44202580

    Shuffle-sharding is similar to stochastic Blue stuff, and you'll find Amazon talking about it: https://aws.amazon.com/builders-library/workload-isolation-u... Which isn't exactly w…

  17. comment
    Comment #44202432

    In practice, identity providers (Okta, Entra, etc.) will retry for a bit before reporting to the IDP admin that their SCIM connection to the SaaS vendor is unhealthy. From there, t…

  18. comment
    Comment #44202337

    To really support Entra in particular, you must have to reference Entra's implicit spec, which is roughly documented here: https://github.com/AzureAD/SCIMReferenceCode/tree/master/…

  19. comment
    Comment #44127115

    Django is in the works! As is Laravel and Rails (my first love).

  20. comment
    Comment #44126921

    Right now we offer prebuilt pages you can redirect to, as well as SDKs your clientside JavaScript can talk to if you want to reskin. Said SDKs are glorified cURL wrappers, and our …

  21. comment
    Comment #44126891

    Since Tesseral's data model is that users belong-to organizations, anytime you have a user, an organization is also available to you (e.g. in the context of a JWT's claims, or an A…

  22. comment
    Comment #44126754

    Thanks Aeneas!

  23. comment
    Comment #44120836

    One way is that it's really obvious what you're supposed to do with Tesseral! Like, here's our Go SDK docs: https://tesseral.com/docs/sdks/serverside-sdks/tesseral-sdk-... It's pre…

  24. comment
    Comment #44119300

    It's a bit of a mix of subtle design decisions and discrete features. A few major things: 1. In business software, Organizations are your tenants. Users aren't tenants themselves. …

  25. comment
    Comment #44118129

    We're aiming to abstract away our AWS dependencies -- KMS, S3, SES -- specifically to accommodate other clouds or non-clouds.