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Gemini 3.1 Pro

https://deepmind.google/models/model-cards/gemini-3-1-pro/
313•PunchTornado•1h ago•188 comments

Show HN: Micasa – track your house from the terminal

https://micasa.dev
61•cpcloud•1h ago•16 comments

Dinosaur Food: 100M year old foods we still eat today (2022)

https://borischerny.com/food/2022/01/17/Dinosaur-food.html
56•simonebrunozzi•2h ago•38 comments

Pebble Production: February Update

https://repebble.com/blog/february-pebble-production-and-software-updates
183•smig0•5h ago•73 comments

Paged Out Issue #8 [pdf]

https://pagedout.institute/download/PagedOut_008.pdf
161•SteveHawk27•5h ago•35 comments

Don't Trust the Salt: AI Summarization, Multilingual Safety, and LLM Guardrails

https://royapakzad.substack.com/p/multilingual-llm-evaluation-to-guardrails
144•benbreen•2d ago•55 comments

Arrays in Forth

https://www.forth.org/svfig/Len/arrays.htm
18•tosh•4d ago•1 comments

Gemini 3.1 Pro Preview

https://console.cloud.google.com/vertex-ai/publishers/google/model-garden/gemini-3.1-pro-preview?...
118•MallocVoidstar•2h ago•60 comments

-fbounds-safety: Enforcing bounds safety for C

https://clang.llvm.org/docs/BoundsSafety.html
78•thefilmore•3d ago•54 comments

Coding Tricks Used in the C64 Game Seawolves

https://kodiak64.co.uk/blog/seawolves-technical-tricks
70•atan2•5h ago•4 comments

Show HN: A physically-based GPU ray tracer written in Julia

https://makie.org/website/blogposts/raytracing/
106•simondanisch•6h ago•36 comments

America vs. Singapore: You Can't Save Your Way Out of Economic Shocks

https://www.governance.fyi/p/america-vs-singapore-you-cant-save
119•guardianbob•3h ago•139 comments

Large Language Models for Mortals: A Practical Guide for Analysts with Python

https://crimede-coder.com/blogposts/2026/LLMsForMortals
44•apwheele•4d ago•10 comments

Bridging Elixir and Python with Oban

https://oban.pro/articles/bridging-with-oban
85•sorentwo•6h ago•41 comments

Measuring AI agent autonomy in practice

https://www.anthropic.com/research/measuring-agent-autonomy
28•jbredeche•3h ago•10 comments

Sizing chaos

https://pudding.cool/2026/02/womens-sizing/
751•zdw•20h ago•390 comments

Why applicant tracking systems are broken by design

https://www.saj.ad/2026/ats
3•dajas•52m ago•0 comments

Zero downtime migrations at Petabyte scale

https://planetscale.com/blog/zero-downtime-migrations-at-petabyte-scale
31•Ozzie_osman•3d ago•8 comments

Show HN: Mini-Diarium - An encrypted, local, cross-platform journaling app

https://github.com/fjrevoredo/mini-diarium
79•holyknight•5h ago•43 comments

The Mongol Khans of Medieval France

https://www.historytoday.com/archive/feature/mongol-khans-medieval-france
78•Thevet•2d ago•32 comments

Against Theory-Motivated Experimentation

https://journals.sagepub.com/doi/10.1177/26339137261421577
18•paraschopra•3h ago•13 comments

27-year-old Apple iBooks can connect to Wi-Fi and download official updates

https://old.reddit.com/r/MacOS/comments/1r8900z/macos_which_officially_supports_27_year_old/
420•surprisetalk•20h ago•238 comments

Famous Signatures Through History

https://signatory.app/#famous-signatures
30•elliotbnvl•4h ago•28 comments

Old School Visual Effects: The Cloud Tank (2010)

http://singlemindedmovieblog.blogspot.com/2010/04/old-school-effects-cloud-tank.html
75•exvi•11h ago•14 comments

ShannonMax: A Library to Optimize Emacs Keybindings with Information Theory

https://github.com/sstraust/shannonmax
46•sammy0910•6h ago•7 comments

Voith Schneider Propeller

https://en.wikipedia.org/wiki/Voith_Schneider_Propeller
73•Luc•3d ago•18 comments

15 years of FP64 segmentation, and why the Blackwell Ultra breaks the pattern

https://nicolasdickenmann.com/blog/the-great-fp64-divide.html
178•fp64enjoyer•16h ago•66 comments

Mark Zuckerberg Grilled on Usage Goals and Underage Users at California Trial

https://www.wsj.com/us-news/law/meta-mark-zuckerberg-social-media-trial-0e9a7fa0
28•1vuio0pswjnm7•1h ago•1 comments

Step 3.5 Flash – Open-source foundation model, supports deep reasoning at speed

https://static.stepfun.com/blog/step-3.5-flash/
177•kristianp•15h ago•77 comments

Anthropic officially bans using subscription auth for third party use

https://code.claude.com/docs/en/legal-and-compliance
564•theahura•15h ago•687 comments
Open in hackernews

Zero downtime migrations at Petabyte scale

https://planetscale.com/blog/zero-downtime-migrations-at-petabyte-scale
31•Ozzie_osman•3d ago

Comments

redwood•1h ago
Worth underlining that this is data migrations from one database server or system to another rather than schema migrations
clarabennett26•1h ago
Running ALTER TABLE on a large MySQL table can lead to significant replication lag. The ghost/pt-osc method using shadow tables and trigger-based replication has its limits, especially when dealing with foreign keys or backfilling computed columns with application logic. I'm interested in how PlanetScale manages the consistency window during cutover since, in my experience, those final seconds of syncing the changelog can be quite critical.
mattlord•1h ago
Blog post author here. I'm happy to answer any related questions you may have.
redwood•55m ago
That 400TB in the image is a large database! I'm guessing that's not the largest in the PlanetScale fleet either. Very impressive and a reminder that you're strongly differentiated against some of the recent database upstarts in terms of battle tested mission critical scale. Out of curiosity how many of these large clusters are using your true managed 'as a service' offering or are they mostly in the bring your own cloud mode? Do you offer zero downtime migrations from bring your own cloud to true as a service?
mattlord•40m ago
That particular cluster has grown significantly since the post was written, and yes there are now quite a few others that are challenging it for the "largest" claim. :-)

These larger ones are fully using the PlanetScale SaaS, but they are using Managed -- meaning that there are resources dedicated to and owned by them. You can read more about that here: https://planetscale.com/docs/vitess/managed

All of the PlanetScale features, including imports and online schema migrations or deployment requests (https://planetscale.com/docs/vitess/schema-changes/deploy-re...) are fully supported with PlaneScale Managed.

redwood•28m ago
Understood: that's great for your customers' EDP negotiations with their cloud providers!
ksec•16m ago
Missing 2024 in the Title.
WaitWaitWha•9m ago
I split step 4 in their "high level, this is the general flow for data migrations".

4.0 Freeze old system

4.1 Cut over application traffic to the new system.

4.2 merge any diff that happened between snapshot 1. and cutover 4.1

4.3 go live

to me, the above reduces the pressure on downtime because the merge is significantly smaller between freeze and go live, than trying to go live with entire environment. If timed well, the diff could be minuscule.

What they are describing is basically, live mirror the resource. Okay, that is fancy nice. Love to be able to do that. Some of us have a mildly chewed bubble gum, a foot of duct tape, and a shoestring.