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The intracies of modern camera lens repair (2024)

https://salvagedcircuitry.com/sigma-45mm.html
119•transistor-man•4h ago•39 comments

Pre-Modern Armies for Worldbuilders, Part I: Why They Fight

https://acoup.blog/2026/06/05/collections-pre-modern-armies-for-worldbuilders-part-i-why-they-fight/
19•gostsamo•1h ago•1 comments

How LLMs work

https://www.0xkato.xyz/how-llms-actually-work/
101•0xkato•2d ago•16 comments

C++: The Programming Language back cover raises questions not answered by front

https://devblogs.microsoft.com/oldnewthing/20260605-01/?p=112391
21•paulmooreparks•1h ago•0 comments

Lockdown Mode

https://help.openai.com/en/articles/20001061-lockdown-mode
26•berlianta•1h ago•7 comments

No Let, No Rec, No Problem: A Gentler Introduction to the Y and Z Combinators

https://irfanali.org/blog/zcom
10•sayyadirfanali•3d ago•0 comments

Astronauts told to return to ISS after sheltering over air leak repairs

https://www.bbc.com/news/live/c4g44ew3g1kt
372•janpot•14h ago•241 comments

pg_durable: Microsoft open sources in-database durable execution

https://github.com/microsoft/pg_durable
364•coffeemug•13h ago•83 comments

New method turns ocean water into drinking water, without waste

https://www.rochester.edu/newscenter/what-is-desalination-definition-ocean-water-704732/
309•speckx•14h ago•136 comments

Gemma 4 QAT models: Optimizing compression for mobile and laptop efficiency

https://blog.google/innovation-and-ai/technology/developers-tools/quantization-aware-training-gem...
314•theanonymousone•12h ago•92 comments

Ask HN: What was your "oh shit" moment with GenAI?

240•andrehacker•1d ago•483 comments

Mouseless – keyboard-driven control of macOS/Linux/Windows

https://mouseless.click
501•riddley•2d ago•209 comments

Did Claude increase bugs in rsync?

https://alexispurslane.github.io/rsync-analysis/
358•logicprog•16h ago•364 comments

Ask HN: Why is the HN crowd so anti-AI?

62•Ekami•2h ago•105 comments

Nordstjernen 1.0

https://github.com/nordstjernen-web/nordstjernen/releases/tag/1.0.0
30•andreasrosdal•5h ago•12 comments

My Agent Skill for Test-Driven Development

https://www.saturnci.com/my-agent-skill-for-test-driven-development.html
157•laxmena•1d ago•63 comments

Show HN: ABC Classic 100 Rankings visualised

https://classic100.gotski.workers.dev/
23•gotski•3h ago•14 comments

Three of our worst VC stories

https://twitter.com/eastdakota/status/2062860530360959273
208•orgonon•10h ago•102 comments

Gov.uk has replaced Stripe with Dutch provider Adyen

https://www.theregister.com/public-sector/2026/06/04/govuk-goes-dutch-on-payments-as-it-dumps-str...
390•toomuchtodo•12h ago•133 comments

The perils of UUID primary keys in SQLite

https://andersmurphy.com/2026/06/05/the-perils-of-uuid-primary-keys-in-sqlite.html
48•emschwartz•6h ago•24 comments

Europe's largest Copper Age tomb: children's bones show ancient health crisis

https://phys.org/news/2026-05-europe-largest-copper-age-tomb.html
23•gmays•1d ago•5 comments

Nine Ways to Do Inheritance in Rust, a Language Without Inheritance

https://medium.com/@carlmkadie/nine-ways-to-do-inheritance-in-rust-a-language-without-inheritance...
23•pjmlp•2d ago•0 comments

The Quiet Numbers Station: Decoding Nineteen Years of GPS Cryptography

https://www.benthamsgaze.org/2026/06/02/the-quiet-numbers-station-decoding-nineteen-years-of-gps-...
77•lordgilman•16h ago•69 comments

Conventional Commits encourages focus on the wrong things

https://sumnerevans.com/posts/software-engineering/stop-using-conventional-commits/
285•jsve•13h ago•221 comments

Transformers are inherently succinct

https://openreview.net/pdf?id=Yxz92UuPLQ
108•brandonb•10h ago•31 comments

Tracing a powerful GNSS interference source over Europe

https://arxiv.org/abs/2606.03673
377•mimorigasaka•20h ago•200 comments

India's surprise baby bust

https://www.economist.com/leaders/2026/06/04/indias-surprise-baby-bust-is-a-warning-to-the-world
153•hakonbogen•14h ago•690 comments

S&P 500 rejects SpaceX, also blocking entry for OpenAI and Anthropic

https://arstechnica.com/tech-policy/2026/06/sp-500-blocks-fast-spacex-entry-wont-waive-rule-for-u...
6•maltalex•35m ago•0 comments

Cooldown Support for Ruby Bundler

https://blog.rubygems.org/2026/06/03/cooldown-let-new-gems-be-vetted.html
151•calyhre•2d ago•42 comments

I tested every IP KVM in my Homelab

https://www.jeffgeerling.com/blog/2026/i-tested-every-ip-kvm/
261•vquemener•14h ago•70 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