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mattashii

HN member
Joined
Wed, Mar 02, 2016, 1:09 AM UTC
HN karma
1,604
Public activity
421 items

About mattashii

PostgreSQL hacker / contributor since 2020, with a focus on indexes, and general performance improvements in subsystems.

Building storage backends @ Databricks (previously Neon) since 2021

Recent public activity

  1. comment
    Comment #49003930

    Whilst they may provide a strong signal, I wouldn't call it a guarantee. If I wanted to avoid vibe-coded contributions I might add such files, but with instructions for the agents …

  2. comment
    Comment #48659244

    I don't think it's that different from pointing out that registering and/or operating a company in e.g. Delaware or Texas is a very different experience from doing so in New York.

  3. story
  4. comment
    Comment #47733435

    If the status column changes, and an index depends on the contents of that status column (be it by referencing it in its columns, or in the index's WHERE filter) then an update of …

  5. comment
    Comment #47342517

    Possibly, ballot sheet size? The national elections in NLD have a single ballot in the whole country, with 10+ parties who each get a column of their candidates on the ballot, and …

  6. comment
    Comment #47321208

    The order returned from the Index Scan is not the ordering requested by the user, so there would still have to be a full (or topk) Sort over the dataset returned from the index sca…

  7. comment
    Comment #46618623

    Epic wasn't fined for putting things on sale. Instead, it was fined for putting pressure on children to buy things that were put on sale; e.g. through wording like "Get it now" and…

  8. comment
    Comment #46084028

    There is also a lot of money, there is also good management, and there are also lots of incentives. But management depends on your manager; at scale it becomes likely there are bad…

  9. comment
    Comment #45758205

    That's why they're called generic parameters, not template parameters; the code is generic over all possible parameters, not templated for every possible parameter.

  10. comment
    Comment #45578368

    It's true that the transistors are on the order of 50nm, but the conduits for getting the electrons to those transistors are presumably a bit smaller than that. Probably not 7nm sm…

  11. comment
    Comment #45449806

    Facebook Nederland B.V. is just one of the defendants; the other defendants are Meta Platforms Ireland (based in Ireland), and Meta Platforms Inc. (the main company, based in the U…

  12. comment
    Comment #45448369

    Judgement (dutch): https://www.bitsoffreedom.nl/wp-content/uploads/2025/10/2025... The judgement requires Meta to change their platforms within 2 weeks so that the user's choice is…

  13. story
  14. comment
    Comment #45411732

    If stocks are on fire then you should probably value them for their ash contents.

  15. comment
    Comment #45378147

    > They do handle minor versions upgrade so the code handling upgrading is there but devs seems to be quite adamant against adding major version upgrade Minor versions of PostgreSQL…

  16. comment
    Comment #45372755

    Doesn't look like it, no. At least not to the degree that it has updated the table AM interface.

  17. comment
    Comment #45372498

    Those are some great features. More than I remembered, and it's only been a year. Personally, I'm very happy to see parallel builds for GIN indexes get released - (re)index time fo…

  18. comment
    Comment #45205843

    (Opinions are my own, not of my employer) I think that "under review" claim is doing some very heavy lifting, especially when it relates to their changes to index tuple lifecycle m…

  19. comment
    Comment #45090961

    I think what they refer to is that while the interests of the individual and the country almost never align, the government can work to align these interests; e.g. through tariffs …

  20. comment
    Comment #45033402

    Glucose can be used as a component in solid fuels, you just need to find an oxidizer to mix in. Alternatively, you can break it down into ethanol, which has been used as liquid roc…

  21. comment
    Comment #45012079

    I hope that ZeroSSL has improved their policies and procedures in the past years so they're more safe and robust. Four and a half years ago, there were some significant oversights …

  22. comment
    Comment #44979671

    > The clearest difference is that in rust these things are explicit rather than implicit. To do this in rust you'd have to use 'static, etc. You could use 'static, or you can move …

  23. comment
    Comment #44757533

    The percentage of comments in line counts doesn't measure the quality of the comments, nor the quality of the codebase. It's rather easy to get over 50% by putting a comment above …

  24. comment
    Comment #44658708

    The mass of a star was at some point a nebula, which collapsed into the star. That collapse reduced the gravitational potential energy of the mass of that nebula, which through acc…

  25. comment
    Comment #44560081

    Wouldn't it be possible to float teflon balloons (without ever descending to the surface), and use those to carry a launch platform? Samples do not need to be surface samples, the …