frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

NIST scientists create 'any wavelength' lasers

https://www.nist.gov/news-events/news/2026/04/any-color-you-nist-scientists-create-any-wavelength...
132•rbanffy•3h ago•62 comments

Anonymous request-token comparisons from Opus 4.6 and Opus 4.7

https://tokens.billchambers.me/leaderboard
403•anabranch•8h ago•415 comments

The electromechanical angle computer inside the B-52 bomber's star tracker

https://www.righto.com/2026/04/B-52-star-tracker-angle-computer.html
251•NelsonMinar•8h ago•73 comments

College instructor turns to typewriters to curb AI-written work

https://sentinelcolorado.com/uncategorized/a-college-instructor-turns-to-typewriters-to-curb-ai-w...
103•gnabgib•5h ago•106 comments

Modern Common Lisp with FSet

https://fset.common-lisp.dev/Modern-CL/Top_html/index.html
70•larve•3d ago•5 comments

Optimizing Ruby Path Methods

https://byroot.github.io/ruby/performance/2026/04/18/faster-paths.html
42•weaksauce•4h ago•15 comments

Why Japan has such good railways

https://worksinprogress.co/issue/why-japan-has-such-good-railways/
297•RickJWagner•12h ago•287 comments

Thoughts and feelings around Claude Design

https://samhenri.gold/blog/20260418-claude-design/
211•cdrnsf•5h ago•146 comments

Migrating from DigitalOcean to Hetzner

https://isayeter.com/posts/digitalocean-to-hetzner-migration/
669•yusufusta•11h ago•342 comments

State of Kdenlive

https://kdenlive.org/news/2026/state-2026/
332•f_r_d•13h ago•111 comments

NASA Shuts Off Instrument on Voyager 1 to Keep Spacecraft Operating

https://science.nasa.gov/blogs/voyager/2026/04/17/nasa-shuts-off-instrument-on-voyager-1-to-keep-...
37•sohkamyung•57m ago•7 comments

Dad brains: How fatherhood rewires the male mind

https://www.bbc.com/future/article/20260417-fatherhood-how-the-male-brain-and-body-prepare-for-ch...
49•tchalla•2h ago•17 comments

Michael Rabin has died

https://en.wikipedia.org/wiki/Michael_O._Rabin
383•tkhattra•3d ago•81 comments

Show HN: MDV – a Markdown superset for docs, dashboards, and slides with data

https://github.com/drasimwagan/mdv
89•drasim•9h ago•32 comments

A story about how I dug into the PostgreSQL sources to write my own WAL receiver

https://medium.com/@mailbox.sq7/a-long-story-about-how-i-dug-into-the-postgresql-source-code-to-w...
11•alzhi7•20h ago•1 comments

Sumida Aquarium Posts 2026 Penguin Relationship Chart, with Drama and Breakups

https://www.sumida-aquarium.com/special/sokanzu/en/2026/
159•Lwrless•3d ago•5 comments

PgQue: Zero-Bloat Postgres Queue

https://github.com/NikolayS/pgque
78•gmcabrita•7h ago•10 comments

Floating Point Fun on Cortex-M Processors

https://danielmangum.com/posts/floating-point-cortex-m/
34•hasheddan•1d ago•1 comments

Scientists discover “cleaner ants” that groom giant ants in Arizona desert

https://www.sciencedaily.com/releases/2026/04/260414075641.htm
72•t-3•3d ago•26 comments

UpCodes (YC S17) is hiring SDRs to help make construction more productive

https://up.codes/careers?utm_source=HN
1•Old_Thrashbarg•7h ago

Understanding the FFT Algorithm (2013)

https://jakevdp.github.io/blog/2013/08/28/understanding-the-fft/
60•peter_d_sherman•3d ago•6 comments

Does your DSL little language need operator precedence?

https://utcc.utoronto.ca/~cks/space/blog/programming/LittleLanguagesVsOpPrecedence
3•ingve•1d ago•1 comments

80386 Memory Pipeline

https://nand2mario.github.io/posts/2026/80386_memory_pipeline/
84•wicket•4d ago•11 comments

Show HN: SmallDocs – Markdown without the frustrations

50•FailMore•3d ago•22 comments

Fuzix OS

https://www.fuzix.org/
73•DeathArrow•9h ago•24 comments

Amiga Graphics Archive

https://amiga.lychesis.net/
230•sph•18h ago•69 comments

Show HN: AI Subroutines – Run automation scripts inside your browser tab

https://www.rtrvr.ai/blog/ai-subroutines-zero-token-deterministic-automation
31•arjunchint•1d ago•4 comments

Show HN: Remoroo – Trying to fix memory in long-running coding agents

https://www.remoroo.com
27•adhamghazali•4d ago•5 comments

Brunost: The Nynorsk Programming Language

https://lindbakk.com/blog/introducing-brunost
131•atomfinger•5d ago•72 comments

4-bit floating point FP4

https://www.johndcook.com/blog/2026/04/17/fp4/
39•chmaynard•7h ago•24 comments
Open in hackernews

You can now directly sync Postgres with Redis

https://github.com/redfly-ai-org/redfly.ai
22•vijaymohan1979•11mo ago

Comments

yohannparis•11mo ago
No Pricing information nor an open-source project. I don't know what to do with this product.
jasonlotito•11mo ago
Assuming the link to the repo is correct: it's open source.

https://github.com/redfly-ai-org/redfly.ai/blob/main/LICENSE

bradleyjkemp•11mo ago
I believe this is another case of abusing GitHub for visibility, not actually doing anything meaningful open source

The code in the repo just seems to be connection code ("provides a way for anybody to test our Redis synchronization service on demand") rather than the sync service itself

vijaymohan1979•11mo ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
maxmcd•11mo ago
Since db cache consistency is a complex research space with things like https://readyset.io/ and https://www.usenix.org/system/files/conference/nsdi13/nsdi13... it would be great to hear more specifics about what this is giving up in order to sidestep all that complexity.
_1tem•11mo ago
There’s also Polyscale as a service.
vijaymohan1979•11mo ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
vijaymohan1979•11mo ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
henning•11mo ago
It'd be nice to see documentation of how it works. Is it using a replication channel for Postgres? The write-ahead log? It looks like it does schema introspection and then works off that. How does it handle schema changes? How does this work in scenarios where you have multi-master replication? What's the compatibility with popular Postgres extensions like PostGIS? What happens if the database is rebooted or crashes? Yes I realize the source is there.
porridgeraisin•11mo ago
> Yes, I realize the source is there

It isn't actually. The codein the repo just seems to be some scaffolding.

vijaymohan1979•11mo ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
hangonhn•11mo ago
Did you really mean to leave your AES key in the code in RedflyEncryptionKeys?

> public const string AesKey = ...

Also, the way AES is used in the code is not good practice. It seems to be using plain AES ( https://learn.microsoft.com/en-us/dotnet/api/system.security... ), which isn't meant to be used bare like that. It needs to be coupled with a digest algorithm to protect the ciphertext. Maybe use AesGcm instead?

foxyv•11mo ago
The reason for this is that AES is not an authenticated algorithm so there is no way to determine if the ciphertext has been modified since encryption. The ciphertext could be modified/corrupted and you wouldn't know.

Also, AES is deterministic and will encrypt the same data the same way every time. This means if you are encrypting a lot of fields you will be able to do statistical attacks. Using an initialization vector with AES GCM is similar to salting a hash. This way there is no statistical method to determine the contents of the ciphertext.

vijaymohan1979•11mo ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
solatic•11mo ago
Can someone ELI5 where this is going to be valuable?

If you set up Postgres read replicas, make sure your queries are covered by appropriate indexes, and your hot queries are handled by Postgres from RAM anyway - do you really need a separate Redis cache?

I feel like anytime I'm going to pull in Redis for a cache, it's going to be for data that I'm not interested in having guaranteed persistency for, like session tokens, and so it'll be for data that I wouldn't be storing in Postgres anyway?

lotharcable•11mo ago
Probably useful for sharing stuff with services that already have access to redis, but you don't want to add SQL client dependencies for and/or don't want to give access to your database.

But you want to be able to store/have single source of authority and update them using a SQL database.

This would then eliminate the need to maintain a separate lambda or cron job or something like that to keep them in sync.

vijaymohan1979•11mo ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A