Hacker News: juancampa

New comment by juancampa in "SpaceX launches Starship v3 rocket"

juancampa — Sat, 23 May 2026 02:03:06 +0000

Glad you mentioned this. I was puzzled by the starry looking background during reentry

New comment by juancampa in "RediShell: Critical remote code execution vulnerability in Redis"

juancampa — Fri, 10 Oct 2025 07:59:51 +0000

How about companies providing Redis as a service?

New comment by juancampa in "The story of DOGE, as told by federal workers"

juancampa — Sat, 27 Sep 2025 07:05:47 +0000

Isn’t this what competition solves?

New comment by juancampa in "Tesla must pay portion of $329M damages after fatal Autopilot crash, jury says"

juancampa — Sat, 02 Aug 2025 01:47:46 +0000

Autopilot in an aircraft is basically cruise control, not full self flying.

New comment by juancampa in "Subsecond: A runtime hotpatching engine for Rust hot-reloading"

juancampa — Thu, 26 Jun 2025 03:30:53 +0000

Amazing! Looking forward to the egui adapter

New comment by juancampa in "U.S. Chemical Safety Board could be eliminated"

juancampa — Tue, 24 Jun 2025 02:18:42 +0000

The article mentions redundancy but doesn't specify what organization is claimed to make CSB redundant. I'm guessing it's the NIH since, to be fair, Vance announced an investigation into the East Palestine chemical spill five days ago: https://www.hhs.gov/press-room/nih-long-term-health-research...

New comment by juancampa in "Trump's NASA cuts would destroy decades of science and wipe out its future"

juancampa — Wed, 18 Jun 2025 19:00:53 +0000

Right, but that budget is enough to pay 60+ $200k salaries. I'd imagine that New Horizons is mostly coasting and there isn't a lot of new data for long periods of time.

New comment by juancampa in "Trump's NASA cuts would destroy decades of science and wipe out its future"

juancampa — Thu, 12 Jun 2025 22:24:54 +0000

This quote about New Horizons is puzzling

> The New Horizons spacecraft [...] reached Pluto in 2016 and is currently exploring other distant features of the system [...]. Keeping it running today by receiving its transmitted data and making sure it remains on course costs about $14.7 million a year, or less than 2% of its total price tag.

Does anyone know why this would be so expensive? A slice of Deep Space Network time must be expensive but it still sounds like an outrageous figure to me.

Fibonacci Hashing: The Optimization That the World Forgot

juancampa — Mon, 14 Apr 2025 01:02:41 +0000

Article URL: https://probablydance.com/2018/06/16/fibonacci-hashing-the-optimization-that-the-world-forgot-or-a-better-alternative-to-integer-modulo/

Comments URL: https://news.ycombinator.com/item?id=43677122

Points: 143

# Comments: 29

New comment by juancampa in "Alphabet spins out Taara – Internet over lasers"

juancampa — Tue, 18 Mar 2025 02:07:50 +0000

fission + fusion

New comment by juancampa in "A DOGE staffer appears to be posting DOGE work on his public GitHub"

juancampa — Sat, 01 Mar 2025 20:34:37 +0000

Honest question. Which laws?

New comment by juancampa in "Astronomers delete asteroid because it turned out to be Tesla Roadster"

juancampa — Mon, 27 Jan 2025 15:11:57 +0000

Agreed, if the title were "Astronomers reclassified asteroid..." there's barely any reason to click on it.

DNA Break Repair [video]

juancampa — Tue, 31 Dec 2024 06:42:34 +0000

Article URL: https://www.youtube.com/watch?v=Xe-83tBcxhs

Comments URL: https://news.ycombinator.com/item?id=42556934

Points: 1

# Comments: 0

New comment by juancampa in "Amazon S3 now supports the ability to append data to an object"

juancampa — Fri, 22 Nov 2024 05:30:11 +0000

Isn't it cheaper than normal S3 though?

> S3 Express One Zone delivers data access speed up to 10x faster and request costs up to 50% lower than S3 Standard [0]

The critical difference seems to be in availability (1 AZ)

[0] https://aws.amazon.com/s3/storage-classes/express-one-zone/

New comment by juancampa in "Launch HN: Regatta Storage (YC F24) – Turn S3 into a local-like, POSIX cloud FS"

juancampa — Tue, 19 Nov 2024 17:28:00 +0000

One more question. How does it handle large files that are frequently modified in arbitrary locations (like a SQLite file)? Will it only upload the "diffs" to S3? I'm guessing it doesn't have to scan the whole file to determine what's changed since it can keep track of what's "dirty".

I ask because last time I checked, S3 wouldn't let you "patch" an object. So you'd have to push the diff as separate objects and then "reconstruct" the original file client-side as different chunks are read, right?

New comment by juancampa in "Launch HN: Regatta Storage (YC F24) – Turn S3 into a local-like, POSIX cloud FS"

juancampa — Tue, 19 Nov 2024 15:22:31 +0000

We're also interested in SQLite shared by multiple processes on something like Regatta but my concerns are the issues described in the SQLite documentation about NFS [1]. Notably "SQLite relies on exclusive locks for write operations, and those have been known to operate incorrectly for some network filesystems."

[1] https://sqlite.org/useovernet.html

Effects of CO2 on decision making and cognition in astronaut-like subjects

juancampa — Mon, 26 Aug 2024 14:36:19 +0000

Article URL: https://www.nature.com/articles/s41526-019-0071-6

Comments URL: https://news.ycombinator.com/item?id=41357556

Points: 3

# Comments: 0

New comment by juancampa in "Ask HN: Who is hiring? (August 2024)"

juancampa — Thu, 01 Aug 2024 19:57:28 +0000

Membrane | Founding Engineer | REMOTE (US Timezones) | Full-time | $150k & Equity Options

We're working on a radically easier way for programmers to automate tasks, build utilities and internal tools. More info: https://membrane.io

We're a small team looking to hire a Founding Engineer who can wear many hats (as we all do), someone who is passionate about building high-performance systems. Extra points if you're confident digging deep into large codebases like VSCode, QuickJS.

Stack: Egui, QuickJS, Wasmtime, Kubernetes, SQLite, Postgres, VSCode.

Interested? Reach out: juan membrane.io

New comment by juancampa in "Egui 0.27 – easy-to-use immediate mode GUI for Rust"

juancampa — Fri, 29 Mar 2024 13:43:46 +0000

egui itself has great support for charts. Check out the demos under "Plot" in https://www.egui.rs/

New comment by juancampa in "Show HN: Invertornot.com – API to enhance your images in dark-mode"

juancampa — Tue, 26 Mar 2024 10:08:15 +0000

That’s the point of using a NN. If it detects people, dim it (losing contrast). If it detect bright vector graphics, invert it (not losing contrast).