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X (Twitter) is back with a new X API Pay-Per-Use model

https://developer.x.com/
2•eeko_systems•5m ago•0 comments

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

https://github.com/dmtrKovalenko/zlob
1•neogoose•8m ago•1 comments

Show HN: Deterministic signal triangulation using a fixed .72% variance constant

https://github.com/mabrucker85-prog/Project_Lance_Core
1•mav5431•9m ago•1 comments

Scientists Discover Levitating Time Crystals You Can Hold, Defy Newton’s 3rd Law

https://phys.org/news/2026-02-scientists-levitating-crystals.html
1•sizzle•9m ago•0 comments

When Michelangelo Met Titian

https://www.wsj.com/arts-culture/books/michelangelo-titian-review-the-renaissances-odd-couple-e34...
1•keiferski•10m ago•0 comments

Solving NYT Pips with DLX

https://github.com/DonoG/NYTPips4Processing
1•impossiblecode•11m ago•1 comments

Baldur's Gate to be turned into TV series – without the game's developers

https://www.bbc.com/news/articles/c24g457y534o
2•vunderba•11m ago•0 comments

Interview with 'Just use a VPS' bro (OpenClaw version) [video]

https://www.youtube.com/watch?v=40SnEd1RWUU
1•dangtony98•16m ago•0 comments

EchoJEPA: Latent Predictive Foundation Model for Echocardiography

https://github.com/bowang-lab/EchoJEPA
1•euvin•24m ago•0 comments

Disablling Go Telemetry

https://go.dev/doc/telemetry
1•1vuio0pswjnm7•26m ago•0 comments

Effective Nihilism

https://www.effectivenihilism.org/
1•abetusk•29m ago•1 comments

The UK government didn't want you to see this report on ecosystem collapse

https://www.theguardian.com/commentisfree/2026/jan/27/uk-government-report-ecosystem-collapse-foi...
3•pabs3•31m ago•0 comments

No 10 blocks report on impact of rainforest collapse on food prices

https://www.thetimes.com/uk/environment/article/no-10-blocks-report-on-impact-of-rainforest-colla...
2•pabs3•31m ago•0 comments

Seedance 2.0 Is Coming

https://seedance-2.app/
1•Jenny249•33m ago•0 comments

Show HN: Fitspire – a simple 5-minute workout app for busy people (iOS)

https://apps.apple.com/us/app/fitspire-5-minute-workout/id6758784938
1•devavinoth12•33m ago•0 comments

Dexterous robotic hands: 2009 – 2014 – 2025

https://old.reddit.com/r/robotics/comments/1qp7z15/dexterous_robotic_hands_2009_2014_2025/
1•gmays•37m ago•0 comments

Interop 2025: A Year of Convergence

https://webkit.org/blog/17808/interop-2025-review/
1•ksec•47m ago•1 comments

JobArena – Human Intuition vs. Artificial Intelligence

https://www.jobarena.ai/
1•84634E1A607A•51m ago•0 comments

Concept Artists Say Generative AI References Only Make Their Jobs Harder

https://thisweekinvideogames.com/feature/concept-artists-in-games-say-generative-ai-references-on...
1•KittenInABox•54m ago•0 comments

Show HN: PaySentry – Open-source control plane for AI agent payments

https://github.com/mkmkkkkk/paysentry
2•mkyang•56m ago•0 comments

Show HN: Moli P2P – An ephemeral, serverless image gallery (Rust and WebRTC)

https://moli-green.is/
2•ShinyaKoyano•1h ago•1 comments

The Crumbling Workflow Moat: Aggregation Theory's Final Chapter

https://twitter.com/nicbstme/status/2019149771706102022
1•SubiculumCode•1h ago•0 comments

Pax Historia – User and AI powered gaming platform

https://www.ycombinator.com/launches/PMu-pax-historia-user-ai-powered-gaming-platform
2•Osiris30•1h ago•0 comments

Show HN: I built a RAG engine to search Singaporean laws

https://github.com/adityaprasad-sudo/Explore-Singapore
3•ambitious_potat•1h ago•4 comments

Scams, Fraud, and Fake Apps: How to Protect Your Money in a Mobile-First Economy

https://blog.afrowallet.co/en_GB/tiers-app/scams-fraud-and-fake-apps-in-africa
1•jonatask•1h ago•0 comments

Porting Doom to My WebAssembly VM

https://irreducible.io/blog/porting-doom-to-wasm/
2•irreducible•1h ago•0 comments

Cognitive Style and Visual Attention in Multimodal Museum Exhibitions

https://www.mdpi.com/2075-5309/15/16/2968
1•rbanffy•1h ago•0 comments

Full-Blown Cross-Assembler in a Bash Script

https://hackaday.com/2026/02/06/full-blown-cross-assembler-in-a-bash-script/
1•grajmanu•1h ago•0 comments

Logic Puzzles: Why the Liar Is the Helpful One

https://blog.szczepan.org/blog/knights-and-knaves/
1•wasabi991011•1h ago•0 comments

Optical Combs Help Radio Telescopes Work Together

https://hackaday.com/2026/02/03/optical-combs-help-radio-telescopes-work-together/
2•toomuchtodo•1h ago•1 comments
Open in hackernews

Value-pool based caching for Java applications

https://github.com/malandrakisgeo/mnemosyne
21•plethon•3mo ago

Comments

NBJack•3mo ago
This sounds useful, but the lengthy attempt to describe what it solves is rather confusing. Is it caching a list? An actual type of object? The type of the object itself?

The diagram, clearly well-intentioned, doesn't really answer my questions either. I'll note the lack of discussion on memory safety gives me pause, but I see evidence of such in the code.

> Once the library is configured for the project, the first thing you need to do is to define the IDs of the objects to be cached.

I'm certain they mean tag the identifier fields used by objects. At first glance, this sounded like a hyper-specific shortlist of objects cached based on their runtime ID values.

> Write more elaborate and cleaner documentation

Please friend; make it concise and clear first.

Fabricio20•3mo ago
The key explanation is:

> Whenever a method is invoked with some arguments, those are used as a key that is mapped to IDs instead of objects. The objects are then retrieved and returned from the ValuePool via their IDs.

You store the actual value on this value map, and then have a bunch of maps with references to this value map. When you update the entity, you can update the cache by updating "just" the value map. All other maps are automatically "updated" because they just reference the identifier (no-op). So you query these other maps to get the list of identifiers, then pull the actual values from the value map.

I get what its trying to do, its just not clear to me how it would handle updating the key-reference maps. If I change the value of a field (say name on a user entity), does it know to remove that entry (user_name_age map as an example) from the references map?

> The caches of the methods are only linked to IDs instead of transaction objects, so we won't need to update something there as long as an object is not deleted.