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Open Source @Github

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Building a custom octocopter from scratch with no prior hardware experience

https://karolina.mgdubiel.com/drone/
28•noleary•2d ago•0 comments

Open Source Low Tech

https://opensourcelowtech.org/
270•grep_it•4d ago•53 comments

Qwen 3.6 27B is the sweet spot for local development

https://quesma.com/blog/qwen-36-is-awesome/
942•stared•17h ago•622 comments

Antares Achieves Criticality of Mark-0 Reactor

https://antaresindustries.com/updates/antares-achieves-criticality
12•clarionbell•1h ago•3 comments

.self: A new top-level domain designed to support self-hosting

https://hccf.onmy.cloud/2026/06/21/reclaiming-our-digital-selves-hccfs-vision-for-a-human-centere...
527•HumanCCF•14h ago•306 comments

Free the Icons

https://weblog.rogueamoeba.com/2026/06/26/free-the-icons/
490•zdw•2d ago•141 comments

The operating cost starts after the demo

https://twoheads.net/the-promise-is-unattended-work/
25•hellokfk•4d ago•13 comments

Memory Safe Context Switching

https://fil-c.org/context_switches
138•modeless•10h ago•25 comments

The end of the AArch64 desktop experiment

https://marcin.juszkiewicz.com.pl/2026/06/26/the-end-of-the-aarch64-desktop-experiment/
56•signa11•5h ago•39 comments

LongCat-2.0, a large-scale MoE model with 1.6T total and 48B Active

https://longcat.chat/blog/longcat-2.0/
154•benjiro29•10h ago•46 comments

Exploring PDP-1 Lisp (1960)

https://obsolescence.dev/pdp1-lisp-introduction.html
77•ozymandiax•9h ago•19 comments

Rocketlab acquires Iridium

https://investors.rocketlabcorp.com/news-releases/news-release-details/rocket-lab-acquire-iridium...
417•everfrustrated•20h ago•277 comments

Old Computer Challenge

http://occ.sdf.org/
65•wrxd•2d ago•24 comments

Linux for the Sega MegaDrive

https://github.com/LinuxMD/linuxmd
118•HardwareLust•19h ago•15 comments

Ornith-1.0: self-improving open-source models for agentic coding

https://github.com/deepreinforce-ai/Ornith-1
214•danboarder•17h ago•39 comments

One million passports leaked online

https://www.theverge.com/tech/947157/passports-data-breach-cannabis-club-systems-nefos-puffpal
285•jruohonen•1d ago•172 comments

How to corrupt an SQLite database file

https://www.sqlite.org/howtocorrupt.html
89•tosh•3d ago•16 comments

US Supreme Court rules geofence warrants require constitutional protections

https://www.theguardian.com/us-news/2026/jun/29/supreme-court-geofence-warrants-case-decision
530•cdrnsf•18h ago•249 comments

Alan Kay on the meaning of "object-oriented programming" (2003)

https://notes.shixiangxi.com/en/docs/appendix/alan-kay-on-oop/
73•sxx0•2d ago•40 comments

30-year sentence for transporting zines is a five-alarm fire for free speech

https://theintercept.com/2026/06/26/daniel-sanchez-estrada-zines-prairieland-free-speech/
593•xrd•1d ago•339 comments

Apple Neural Engine: Architecture, Programming, and Performance

https://arxiv.org/abs/2606.22283
180•Jimmc414•2d ago•23 comments

Zig – SPIR-V Backend Progress

https://ziglang.org/devlog/2026/#2026-06-26
70•Retro_Dev•4d ago•36 comments

Dark Sky Lighting

https://www.savingourstars.org/darkskylighting#whatisdarkskylighting
215•alexandrehtrb•4d ago•38 comments

A native graphical shell for SSH

https://probablymarcus.com/blocks/2026/06/28/native-graphical-shell-for-SSH.html
315•mrcslws•19h ago•176 comments

WATaBoy: JIT-Ing Game Boy Instructions to WASM Beats a Native Interpreter

https://humphri.es/blog/WATaBoy/
208•energeticbark•19h ago•34 comments

What happens when you run a CUDA kernel?

https://fergusfinn.com/blog/what-happens-when-you-run-a-gpu-kernel/
259•mezark•21h ago•31 comments

British Origami: the 1955 exhibition by Akira Yoshizawa (2005)

https://www.britishorigami.org/cp-lister-list/the-1955-exhibition-by-akira-yoshizawa/
35•dang•1d ago•3 comments

Popping the GPU Bubble

https://moondream.ai/blog/popping-the-gpu-bubble
140•radq•5h ago•36 comments

Kb – Prolog Knowledge Base

https://github.com/mat-mgm/kb-prolog
82•triska•2d ago•9 comments

Wallace the 6 inch f/2.8 telescope, building it, and hiking with it

https://lucassifoni.info/blog/hiking-with-wallace/
141•chantepierre•4d ago•26 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