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I Stored a Website in a Favicon

https://www.timwehrle.de/blog/i-stored-a-website-in-a-favicon/
119•theanonymousone•3h ago•38 comments

Data Compression Explained (2012)

https://mattmahoney.net/dc/dce.html
117•mtdewcmu•3d ago•15 comments

Where to Find the Colors Your Screen Can't Show You

https://moultano.wordpress.com/2026/06/19/where-to-find-the-colors-your-screen-cant-show-you/
96•moultano•5h ago•26 comments

There are no instances in ATProto

https://overreacted.io/there-are-no-instances-in-atproto/
437•danabramov•18h ago•225 comments

Can you see three trees?

https://www.not-ship.com/can-you-see-three-trees/
106•Pamar•2d ago•47 comments

The discovery that changed how scientists think about memory

https://www.ibm.com/think/news/discovery-changed-how-scientists-think-about-memory-kavli-prize
52•rbanffy•2d ago•11 comments

Surprising economics of load-balanced systems

https://brooker.co.za/blog/2020/08/06/erlang.html
108•KraftyOne•12h ago•26 comments

Hyundai buys Boston Dynamics

https://startupfortune.com/hyundai-takes-full-control-of-boston-dynamics-as-softbank-exits-for-32...
823•ck2•16h ago•362 comments

How many of the 170k English words do you know?

https://vocabowl-870366514258.us-west1.run.app/
364•abnry•19h ago•447 comments

GPT-5.5 hallucinates 3x more than MIT-licensed GLM-5.2

https://arrowtsx.dev/bigger-models/
139•oshrimpton•17h ago•37 comments

Norway imposes near ban on AI in elementary school

https://www.reuters.com/technology/norway-imposes-near-ban-ai-elementary-school-2026-06-19/
659•ilreb•17h ago•453 comments

Soccer Arcade Games Through the Years

https://arcadeheroes.com/2026/06/13/world-cup-2026-soccer-arcade/
16•speckx•3d ago•2 comments

Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28

https://www.jvm-weekly.com/p/project-valhalla-explained-how-a
591•philonoist•1d ago•368 comments

Bobby Prince, composer for Doom, Wolfenstein 3D, and Duke Nukem 3D, has died

https://www.legacy.com/legacy/robert-bobby-prince-lll
369•pgrote•13h ago•40 comments

Satellite reveals immense scale of GPS signal tampering

https://www.space.com/space-exploration/satellites/its-quite-a-bit-more-than-we-expected-satellit...
73•y1n0•5h ago•23 comments

A Perceptron in Age of Empires II

https://adewynter.github.io/notes/aoe2-circuits
72•EvgeniyZh•2d ago•31 comments

Egyptian Fractions (2006)

https://blog.plover.com/math/egyptian-fractions.html
94•luu•4d ago•8 comments

A 1969 camera operators' strike created Upstairs Downstairs multiverse

https://ironicsans.ghost.io/the-color-strike/
19•ohjeez•3d ago•2 comments

AURpocalypse now: a look at the recent AUR attacks

https://lwn.net/SubscriberLink/1077619/f7b07c5489fdd43a/
80•jwilk•16h ago•52 comments

John Jumper to join Anthropic

https://twitter.com/JohnJumperSci/status/2068001285173834106
129•artninja1988•15h ago•95 comments

Court Records Should Be Free

https://www.eff.org/deeplinks/2026/06/court-records-should-be-free
363•hn_acker•15h ago•80 comments

Zen and the Art of Machine Learning Research

https://blog.jxmo.io/p/zen-and-the-art-of-machine-learning
256•jxmorris12•4d ago•92 comments

Ask HN: Will programmers write more efficient code during the memory shortage?

106•amichail•10h ago•176 comments

Building a robotics research setup that lives next to my desk

https://dfdxlabs.com/research/2026/robotics-setup/
148•mplappert•1d ago•51 comments

Digital Printing of Arabic: explaining the problem

https://digitalorientalist.com/2017/08/21/digital-printing-of-arabic-explaining-the-problem/
54•a_t48•3d ago•23 comments

Show HN: Metiq: a real time 3D globe for 100 public datasets

https://metiq.space
122•rakeda•3d ago•32 comments

Telescope Ranchers

https://kottke.org/26/06/telescope-ranchers
123•bookofjoe•3d ago•47 comments

Big Banana Car

https://bigbananacar.com/
150•Bender•15h ago•76 comments

Designing a backyard deck for my house

https://blog.cosmin.cloud/posts/diy-deck.html
14•spycraft•4h ago•4 comments

Ten years of ClickHouse in open source

https://clickhouse.com/blog/open-source-10
301•saisrirampur•4d ago•82 comments
Open in hackernews

You can now directly sync Postgres with Redis

https://github.com/redfly-ai-org/redfly.ai
22•vijaymohan1979•1y ago

Comments

yohannparis•1y ago
No Pricing information nor an open-source project. I don't know what to do with this product.
jasonlotito•1y 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•1y 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•1y ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
maxmcd•1y 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•1y ago
There’s also Polyscale as a service.
vijaymohan1979•1y ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
vijaymohan1979•1y ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
henning•1y 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•1y ago
> Yes, I realize the source is there

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

vijaymohan1979•1y ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
hangonhn•1y 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•1y 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•1y ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A
solatic•1y 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•1y 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•1y ago
https://github.com/redfly-ai-org/redfly.ai/wiki/Q-&-A