Aaron Dancer

JavaScript lover, educator, and sometimes designer. Software and Cloud Architect.

[Diogo Almeida @CompleteSkeptic]

After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI?

I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev

• 20-200x faster
• 40-400x cheaper (w/ output tokens free)
• Frontier composable intelligence optimized for decisions

AFAICT the shortest path to AI-based economic revolution

[Aaron Dancer @zweidancer]

Slow is smooth, smooth is fast.

[Tom Dörr @tom_doerr]

Manages PostgreSQL schema migrations

[React @reactjs]

React 19.2 is now available!

This release includes Activity, useEffectEvent, React Performance Tracks, partial pre-rendering, and more!

[Vlad Mihalcea @vlad_mihalcea]

🎉 So cool! PostgreSQL 18 can now do Index Skip Scans, meaning that you can now use the Index even when filtering by the second column.

Other worth noting features:

1️⃣ Asyn I/O when scanning pages from the disk
2️⃣ Virtual columns that can be computed at query time (great for JSON path indexing)
3️⃣ Time-sorted UUID via uuidv7()

For more details, check out this article from Crunchy Data.

https://t.co/fiRFEeDFix

[Paul Copplestone - e/postgres @kiwicopple]

congrats to the @PostgreSQL contributors 🐘

◆ asynchronous I/O
◆ UUIDv7
◆ virtual generated columns
◆ temporal constraints
◆ oauth authentication
◆ improved text search
◆ parallel streaming in replication
◆ new wire protocol (first new protocol version since 2003)

[Tobias_Petry.sql @tobias_petry]

So today I have to say this again:

UUIDv7 primary keys are a valid choice. They eliminated the performance problems of random UUIDv4 values.

And if you need to shard one day, you can easily move rows to other shards because you won‘t have clashing numerical ids.

[Luke Wroblewski @LukeW]

as more companies decide to "add AI chat to our application", the same problems show up again and again.

[Matt Pocock @mattpocockuk]

Am I dreaming? How long has `crypto.randomUUID()` been available?

Why on earth did I ever download a package to generate random UUIDs?

[Wes Bos @wesbos]

🤯 How am I just finding out about display: contents;

Suuuuper handy for CSS Flexbox + Grid where the children aren't direct descendants.

[Naval @naval]

If you want to impact the world, then have good ideas, articulate them well, without ulterior motive, and bring them into reality.

[Ricky @rickyfm]

There's a lot of talk about new server features of React, but here are some upcoming client features I'm excited about. You don’t need to know about these yet, but they're available in the canary, so I want to share them to show what’s coming for client-only React apps:

[Andrei Calazans @Andrei_Calazans]

Unpopular opinion? I dislike file-based routing solutions, I don't feel like it scales well, specially for nested routes and handling of URL params. I believe code gives you better safeguards and flexibility over organization.

[Gabriel Vergnaud @GabrielVergnaud]

Ok, my brain is exploding.

[David Marcus @davidmarcus]

I wonder why car manufacturers even bother investing in proprietary nav systems. They’re universally horrible, and no one I know uses them.

[Zach Tratar @zachtratar]

Most software engineers have never experienced what I’ll call “full startup speed”.

Yes, it’s possible to fix 15 app bugs, fully dockerize apps, productionize dbs, get deploy scripts running (even kubernetes), add CI, SSL, and send first invites in… under 2 days.

[Aaron Dancer @zweidancer]

Happy New Year!

[Rob Palmer @robpalmer2]

TypeScript treats 🎉

Congrats to @atcb on enhancing module resolution, heading for TypeScript 5.0 👍

🔷 "moduleResolution": "bundler" better reflects behavior in bundlers & Bun

🔷 "allowImportingTsExtensions" lets imports refer to *.ts files!

https://t.co/9LYkzPigGB

[Aaron Dancer @zweidancer]

@Austen I think there’s this assumption that _tons_ of engineers are being laid off. Most of the layoffs aren’t engineering. The increase in active job seekers for SE roles is likely around 10k people. That’s very small compared to the number of roles open.

[Aaron Dancer @zweidancer]

@Austen Can confirm market is still very active. There’s an increase of actively seeking hires and slight decrease in openings (especially entry level); but the bigger issue is the quality of candidates.

If new grads are landing good roles right now, that’s a strong positive indicator.