Creator of @tokio_rs. Building Toasty, an ORM for Rust (github.com/tokio-rs/toasty). Prev: Cargo, Ruby's Bundler, and others. Ruby on Rails core team alum.
Joined April 2007
- Tweets 5,192
- Following 226
- Followers 6,415
- Likes 653
77 Photos and videos
Carl Lerche retweeted
15h
10
22
538
47,113
Jun 13
I spent 3 days with Fable and it is clearly a much superior model. I asked it to do the same challenging task I have asked every other model to do, and it did it with no effort where the output of all prior models was unusable.
3
13
1,516
Jun 4
The "we spent large amounts on AI and saw no return, thus AI is a dud" argument holds no water. If any company 2Xed their spend on software engineers, they wouldn't see any return either. Just "build more" doesn't get you returns. You have to build the right things.
5
1
35
2,179
Jun 3
All I see in my feed is TanStack. I don't even know what it is, and now I'm too afraid to ask.
2
9
1,416
Jun 3
I'm not sure how I feel about Claude answering like this...
5
20
3,219
Jun 3
Claude is still bad at recommending meme templates. At least my job won't be replaced soon.
1
13
889
Jun 3
Being able to learn Rust faster with LLMs will be Rust's inflection point. If switching languages is easy, why not use the language that gets you the fast, memory-efficient, and reliable end product?
4
3
46
6,035
Jun 3
If you are in the Bay Area and want to hear about the
@tokio_rs scheduler, including future improvements to improve small compute-bound sections (e.g. TLS handshakes), I'll be talking at the Rust meetup tomorrow: luma.com/6c1kkbxh
1
1
19
761
Jun 2
Is the @ syntax here already available? It makes a lot of sense, but I haven't seen it before.
Building apps has never been easier.
With Sites, Codex can turn your work, ideas, and plans into an interactive website or app your team can explore, use, and share with a URL.
Rolling out to Business and Enterprise plans, before expanding more broadly.
1
489
Jun 2
Maybe everyone is paying down on accumulated technical debt now... 🤔 right? Joking aside, that is actually what I did first. Banged out all the large mechanical refactors I had been putting off.
this may a really dumb question:
what exactly is uber working on that requires a ton of new code?
same thing with airbnb, lyft, etc.
2
871
Jun 2
Every one says "designed to work with AI" and "model first" and "pattern X doesn't work well with agents". I still have no idea what actually makes agents work better. It feels like whatever I throw at them works better than I expected.
1
6
908
Jun 1
Anthropic has "confidentially" submitted a draft S-1. Just a secret between them and the internet at large.
Jun 1
Anthropic has confidentially submitted a draft S-1 registration statement to the Securities and Exchange Commission.
Pending completion of SEC review, this gives us the option to pursue an initial public offering.
Read more: anthropic.com/news/confident…
2
9
1,432
Carl Lerche retweeted
Jun 1
The TokioConf 2026 talks are now available on YouTube: youtube.com/playlist?list=PL…. Also, TokioConf 2027 will be April 26 & 27, 2027 in Portland, OR. Save the date!
1
2
384
Empowering people to own and change their software was the open source slogan for decades. Now the grand democratization finally arrives, and it's all "yeah, but not like that" 🙄
Flathub has updated their policy to explicitly ban the usage of AI / LLM in the development of any software.
“Applications containing AI-generated or AI-assisted code, documentation, or other content are not allowed.”
Flathub is a Flatpak powered “App Store for Linux”, popular among GNOME users.
116
74
1,194
130,464
May 31
The tipping point for LLMs was what? 5 months ago? I keep seeing articles like “if AI is so great, then where are the flying cars? Checkmate”. What was the world like 5 months after the internet’s tipping point? Application takes time.
1
475
Carl Lerche retweeted
May 30
🦀 Rust: Zero-copy and production investigation
Great TokioConf talk on what happens when a Rust/Tokio system goes from 10M to 45M req/s and every comfortable assumption breaks.
Takeaway: profile first, question every abstraction.
youtube.com/watch?v=ErsqmCmn…
#rust #rustlang
3
20
222
8,658
May 29
A big Toasty release (async ORM for Rust)! The relation declaration API improved, added support for multi-step relations, update! macro with ops like increment / add / push, and support for @tursodatabase. github.com/tokio-rs/toasty/r…
3
5
46
9,487
May 29
Is Toasty good? This was just posted to Discord: "how you designed the relations with Deferred for everything then a nested Option or Vec etc... is amazing! It's very intuitive and works perfectly. Simply dropping Deferred to make the field always included is really simple"
4
717