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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
576•klaussilveira•10h ago•167 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
889•xnx•16h ago•540 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
91•matheusalmeida•1d ago•20 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
18•helloplanets•4d ago•10 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
21•videotopia•4d ago•0 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
197•isitcontent•11h ago•24 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
199•dmpetrov•11h ago•91 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
307•vecti•13h ago•136 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
352•aktau•17h ago•175 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
350•ostacke•17h ago•91 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
453•todsacerdoti•19h ago•228 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
20•romes•4d ago•2 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
79•quibono•4d ago•18 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
52•kmm•4d ago•3 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
253•eljojo•13h ago•153 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
388•lstoll•17h ago•263 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
5•bikenaga•3d ago•1 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
231•i5heu•14h ago•175 comments

Zlob.h 100% POSIX and glibc compatible globbing lib that is faste and better

https://github.com/dmtrKovalenko/zlob
12•neogoose•3h ago•7 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
68•phreda4•10h ago•12 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
24•gmays•6h ago•6 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
116•SerCe•7h ago•94 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
135•vmatsiiako•16h ago•59 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
43•gfortaine•8h ago•13 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
268•surprisetalk•3d ago•36 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
168•limoce•3d ago•87 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1039•cdrnsf•20h ago•431 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
60•rescrv•18h ago•22 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
14•denuoweb•1d ago•2 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
88•antves•1d ago•63 comments
Open in hackernews

Show HN: DriftDB – An experimental append-only database with time-travel queries

https://github.com/DavidLiedle/DriftDB
24•DavidCanHelp•4mo ago

Comments

twosdai•4mo ago
Really interesting! I used influxdb for a while. I see one of the core features is to have AS OF <some date time> be used for historical reference.

Is this similar to running an append only data structure in a normal tsdb, and then querying by date time and taking the most recent value in that data set? Or is it different.

refset•4mo ago
Looks like DriftDB is focused on the 'system time' AS OF dimension, a.k.a. rollback querying. AsOf joins are more about doing analysis over user-defined domain timestamps (/ 'valid time'). Combining both concepts gets you a bitemporal database.
withinboredom•4mo ago
Nice! I built one of these at a previous company for AI training. It’s nice to see an open source version. Did you look into any of the Temporal SQL papers by chance? There’s some nice syntax when you want to join across time.
refset•4mo ago
The SQL:2011 syntax puts the temporal filters directly after base table reference (and before the table alias) [0]

i.e. it would be `SELECT * FROM orders FOR SYSTEM_TIME AS OF "@seq:1000" WHERE customer_id="cust1"` rather than `SELECT * FROM orders WHERE customer_id="cust1" AS OF "@seq:1000"` (the latter being an example from the DriftDB readme)

[0] https://docs.xtdb.com/reference/main/sql/queries.html#_tempo...

withinboredom•4mo ago
Yes, but that’s just time traveling, IIRC. With actual time travel queries you can see what changed between T1 and T2, like “show me all users that changed their email address last month” or “of the products that changed prices, how much did they change by” etc.

You can build all of that on top of simple time travel, but there was a lot of research on how to bake it into the SQL language. IIRC, a lot of it was proposed for the SQL standard but it was too niche or something. It’s been over half a decade since I was in that space.

wrl•4mo ago
Yet more vibe-coded spam. For context, this is the same author who just got flagged off the front page for an LLM-written book about Lisp.
DavidCanHelp•4mo ago
More context: haters are saying LLM generated content is bad. As a Senior Full Stack Developer with over 26 years of pro experience, I'm having the time of my life with these new AI powers and the doors and discussions they open. People are upvoting. I'm personally not getting anything from this open source sharing. You're the one calling spam. When you pay 200 a month to max your claude code output and really hunker down, think twice before you share its work. Not everyone understands.
OutOfHere•4mo ago
It is absurd to pay $200 a month for it when GitHub Copilot has agentic development basically for free for open source developers, including GPT/Claude/Gemini models. If you want to waste your own money, fine, but don't expect others to waste a single dollar of their money when decent options are available at no cost.

Especially Claude is well known for wasting output tokens, for maximizing output token use when fewer tokens would do just fine, although other models too have picked up this disease as of late.

Yes, better models could produce better output, especially for a large project, but in my experience, the quality of the output depends 10x more on the clarity and refinement of the input. In the real world, the bulk of engineering is incremental, not one-shot.

Also, when I see a large repo with just three commits made all at once, it tells me that the vibe-coded output hasn't really been reviewed or refined over time, that it has not withstood the test of time at all, it hasn't received the love and attention it needs to make it mature, and so it cannot be trusted in this stage of its development.

tonyhart7•4mo ago
wait what??? github copilot is free??? is that only free trial?
OutOfHere•4mo ago
Its Pro plan is not free for everyone, but it is free for verified students, teachers, and maintainers of popular established open source projects. See https://github.com/features/copilot/plans . I clearly noted in my parent comment the constraint of open source developers. It's not a trial. If you get approved, you get re-evaluated each month.
compootr•4mo ago
> LLM-written book about Lisp.

I don't really care if you're an astronaut, time traveler, or a 15 year old. AI slop prompted by anyone is slop, and I'm a human with limited time which I'd rather not waste on slop

majorchord•4mo ago
This comment itself reads like AI slop.
brothrock•4mo ago
how is this spam? it’s posted the same way as any HN post and it’s not soliciting anything.
appreciatorBus•4mo ago
He’s been on a spree, “writing” and posting a dozen books or other projects in the last 2 days.
erichocean•4mo ago
XTDB can also do this, open source, free license.
OutOfHere•4mo ago
Link: https://github.com/xtdb/xtdb
shikhar•4mo ago
Very cool! Maybe you'll consider turning it distributed by using s2.dev for the append-only event logs :)

Someone tried this with XTDB, https://github.com/chucklehead-dev/s2-log

_false•4mo ago
I'm a fan of event sourcing architecture [1]. This looks like a good backend for it.

[1]: https://martinfowler.com/eaaDev/EventSourcing.html

mentalgear•4mo ago
Isn't this the same as CRDT libs like automerge are doing ?
packetlost•4mo ago
No, event-sourcing is a subset of an implementation detail of some (most, maybe all?) CRDTs. An event-sourcing based system doesn't even need to be distributed, but often is.