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Precision Clock Mk IV

https://mitxela.com/projects/precision_clock_mk_iv
242•ahlCVA•4h ago•80 comments

A Lean companion to Analysis I

https://terrytao.wordpress.com/2025/05/31/a-lean-companion-to-analysis-i/
97•jeremyscanvic•3h ago•6 comments

Oxfordshire clock still keeping village on time after 500 years

https://www.bbc.com/news/articles/cz70p0qevlro
65•1659447091•2d ago•28 comments

Show HN: PunchCard Key Backup

https://github.com/volution/punchcard-key-backup
64•ciprian_craciun•3h ago•23 comments

Photos taken inside musical instruments

https://www.dpreview.com/photography/5400934096/probe-lenses-and-focus-stacking-the-secrets-to-incredible-photos-taken-inside-instruments
898•worik•23h ago•46 comments

AtomVM, the Erlang virtual machine for IoT devices

https://www.atomvm.net/
131•ahamez•3d ago•39 comments

The Two Ideals of Fields

https://susam.net/two-ideals-of-fields.html
35•susam•5h ago•19 comments

Designing Pareto-optimal RAG workflows with syftr

https://www.datarobot.com/blog/pareto-optimized-ai-workflows-syftr/
29•roma_glushko•3d ago•7 comments

Using Ed(1) as My Static Site Generator

https://aartaka.me/this-post-is-ed.html
39•BoingBoomTschak•6h ago•15 comments

Show HN: Fontofweb – Discover Fonts Used on a Website or Websites Using Font(s)

https://fontofweb.com
36•sim04ful•5h ago•18 comments

AI video you can watch and interact with, in real-time

https://experience.odyssey.world
81•olivercameron•3d ago•31 comments

Beware of Fast-Math

https://simonbyrne.github.io/notes/fastmath/
257•blobcode•12h ago•174 comments

Using lots of little tools to aggressively reject the bots

https://lambdacreate.com/posts/68
120•archargelod•11h ago•57 comments

We're beating $359M in funding with two people and OCaml

https://terrateam.io/blog/punching-above-weight
25•imadj•51m ago•5 comments

Exploring a Language Runtime with Bpftrace

https://www.mgaudet.ca/technical/2025/5/28/exploring-a-language-runtime-with-bpftrace
6•mgaudet•3d ago•0 comments

Gradients Are the New Intervals

https://www.mattkeeter.com/blog/2025-05-14-gradients/
114•surprisetalk•13h ago•41 comments

Acclimation of Osmoregulatory Function in Salmon

https://www.unm.edu/~toolson/salmon_osmoregulation.html
16•mooreds•5h ago•3 comments

Webb telescope helps refines Hubble constant, suggesting resolution rate debate

https://phys.org/news/2025-05-webb-telescope-refines-hubble-constant.html
77•pseudolus•3d ago•42 comments

Atlas: Learning to Optimally Memorize the Context at Test Time

https://arxiv.org/abs/2505.23735
14•og_kalu•5h ago•0 comments

Surprisingly fast AI-generated kernels we didn't mean to publish yet

https://crfm.stanford.edu/2025/05/28/fast-kernels.html
354•mfiguiere•23h ago•149 comments

Show HN: AI Peer Reviewer – Multiagent System for Scientific Manuscript Analysis

https://github.com/robertjakob/rigorous
75•rjakob•6h ago•65 comments

Show HN: I built an AI agent that turns ROS 2's turtlesim into a digital artist

https://github.com/Yutarop/turtlesim_agent
24•ponta17•9h ago•6 comments

The ‘white-collar bloodbath’ is all part of the AI hype machine

https://www.cnn.com/2025/05/30/business/anthropic-amodei-ai-jobs-nightcap
557•lwo32k•1d ago•1002 comments

The Illusion of Causality in Charts

https://filwd.substack.com/p/the-illusion-of-causality-in-charts
35•skadamat•3d ago•19 comments

The Trackers and SDKs in ChatGPT, Claude, Grok and Perplexity

https://jamesoclaire.com/2025/05/31/the-trackers-and-sdks-in-chatgpt-claude-grok-and-perplexity/
59•ddxv•11h ago•2 comments

C++ to Rust Phrasebook

https://cel.cs.brown.edu/crp/
171•wcrichton•21h ago•57 comments

Beating Google's kernelCTF PoW using AVX512

https://anemato.de/blog/kctf-vdf
316•anematode•1d ago•91 comments

Microsandbox: Virtual Machines that feel and perform like containers

https://github.com/microsandbox/microsandbox
353•makeboss•1d ago•169 comments

Revenge of the Chickenized Reverse-Centaurs

https://pluralistic.net/2022/04/17/revenge-of-the-chickenized-reverse-centaurs/
159•GreenWatermelon•3d ago•91 comments

Show HN: Icepi Zero – The FPGA Raspberry Pi Zero Equivalent

https://github.com/cheyao/icepi-zero
216•Cyao•3d ago•50 comments
Open in hackernews

Bridged Indexes in OrioleDB: architecture, internals and everyday use?

https://www.orioledb.com/blog/orioledb-bridged-indexes
75•pella•1d ago

Comments

apavlo•1d ago
"Bridged Indexes" is a non-standard term. These are just secondary indexes using logical pointers with a mapping index. IIRC, Oracle, Hana, and HyPer do the same thing.

Source: https://db.cs.cmu.edu/papers/2017/p781-wu.pdf (see Table 1 + Section 6.1)

_joel•1d ago
> secondary indexes using logical pointers with a mapping index.

rolls off the tongue.

mattashii•9h ago
It's more than just one mapping index, though.

The CMU paper indicates the logical keys are either TupleID or Primary Key, while the bridged index is actually a TupleID that resolves to a Primary Key, which resolves to the actual tuple - one more level than indicated by 6.1's explanation of logical pointers.

rubenvanwyk•1d ago
Cannot wait for OrioldeDB to reach General Availability. Postgres needs options for open-source separation of storage and compute.
the_duke•1d ago
That kind of exists thanks to NeonDB? https://neon.com

Althoug with them being recently acquired by Databricks it remains to be seen how the open source version will fare.

akorotkov•22h ago
> That kind of exists thanks to NeonDB?

This is unrelated to NeonDB. OrioleDB has been acquired by Supabase. https://supabase.com/blog/supabase-acquires-oriole

mattashii•9h ago
Neon is indeed unrelated to OreoleDB, but Neon does also provide the separation of storage and compute in Postgres which GP asked about ("Postgres needs options for open-source separation of storage and compute"). A mention of Neon (which is Apache 2 licensed) therefore isn't totally unwarranted.
dkhenry•1d ago
OrioleDB isn't a separation of storage and compute, its a more efficient storage engine for Postgres to replace the existing HEAP engine. This is like how in MySQL we could swap MyISAM for InnoDB and eventually RocksDB.

I did some benchmarks on it previously to show how much of an improvement it gives over the stock HEAP engine

EDIT: correct link to the public dashboard below, thanks for the heads up @kiwicopple

https://airtable.com/app7jp5t0dEHyDpa8/shr00etqywoDW2N6N

kiwicopple•1d ago
fwiw I couldn't access your airtable link, but I found this one online:

https://airtable.com/app7jp5t0dEHyDpa8/shr00etqywoDW2N6N

thanks for running the benchmarks, it helps to have external parties verifying the progress

CathalMullan•1d ago
There's an experimental feature which separates storage and compute.

https://www.orioledb.com/docs/usage/decoupled-storage

iamdanieljohns•1d ago
Is the need for Oriole negated by using a system that separates storage from compute like Neon, Xata?
nikita•1d ago
(Neon CEO)

Not really. OrioleDB solve the vacuum problem with the introduction of the undo log. Neon gives you scale out storage which is in a way orthogonal to OrielDB. With some work you can run OrioleDB AND neon storage and get benefits of both.

akorotkov•22h ago
> OrioleDB solve the vacuum problem with the introduction of the undo log.

Way more than just this!

> With some work you can run OrioleDB AND neon storage and get benefits of both.

This would require significant design work, given that significant OrioleDB benefits are derived from row-level WAL.

tudorg•1d ago
Answering on behalf of Xata, it is orthogonal. I'm curious to try out Oriole on our platform when I get some time.