@basso_tom Hey Tom, what about today's session? Wondering how volatility looks like on your side
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Otávio Carvalho
350 posts
Otávio Carvalho
@otavioccc
Yet another software bricklayer.
Barcelona, Catalunya Katılım Ocak 2023
1.3K Takip Edilen125 Takipçiler
First time for me in my trading. Decent profits going into the close. I check my positions against the trading platform, pull down the data on everything I trade, and I’m running my strategies to create and send tomorrow’s orders when three orders go off on yesterday’s orders! Never happened before. I had to recheck the positions and rerun the daily processes. After markets are still volatile. Enjoy the ride!
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@sunbains @FilasienoF @muratdemirbas Yeah, but he has a fair point. We are building a whole market segment that is composed of "disaggregate-to-S3" databases assuming the current pricing models. Cloud infra might evolve in different ways and change the price equation.
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The WAL is made up of small records and even with grouping in the real world you will end up with lots of small writes to the object store.
If you implement your own object store then it’s a different story. Most cloud object stores charge per request and have fairly high latencies.
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[new blog post]
Building a database on S3
muratbuffalo.blogspot.com/2026/03/buildi…
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Otávio Carvalho retweetledi
I think that the future of software development is going to be a specification-driven loop, driven by AI agents.
This is going to require significant innovation in specification, especially specification of performance properties.
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Otávio Carvalho retweetledi
Leslie Lamport won a Turing award for his fundamental contributions to distributed systems. For instance, he invented the Paxos consensus algorithm that is a critical component of many distributed systems today. I interviewed him about his work and career. We discussed:
• Why he never considered himself smart
• The stories behind Paxos and Byzantine Generals Problem
• Experiences working with Dijkstra
• Paxos vs Raft Algorithms
• How to improve your thinking
Where to watch:
• YouTube: youtu.be/U719vQz-WFs
• Spotify: open.spotify.com/episode/7JHYsz…
• Apple Podcasts: podcasts.apple.com/us/podcast/the…
• Transcript: developing.dev/p/turing-award…
YouTube
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Otávio Carvalho retweetledi
“All the good ideas are taken.”
“If I was born 5 years earlier I’d be rich.”
“I missed the window.”
People said this about dot-com, Web 2.0, social, mobile, cloud… and now AI. There’s always another window. The people who aren't complaining are the ones who are seizing it.
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@MisbahSy Nice post, thanks for sharing! I think those are fun toys, but we need a higher level abstraction for real LLM based agents.
Wrote about it here: otavio.cat/posts/ai-orche…
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Is AI agent orchestration just reinventing tuple spaces?
There might be something to learn from 40 years of research.
Looking at what appears old vs genuinely new: otavio.cat/posts/ai-orche…
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Otávio Carvalho retweetledi
Now on YouTube, Monday's CMU Database Seminar on Aurora DSQL. Thanks again to the awesome CMU folks (especially Andy Pavlo) for inviting me to do this talk.
youtube.com/watch?v=mK2h9V…
YouTube
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@Steve_Yegge there is competition going your way, I think you can call it PMF
Barcelona, Spain 🇪🇸 English
Seeing Anthropic drawing inspiration from Gas Town’s architecture (let’s call it “flattery by imitation”) makes me think we’re onto something. Interesting times.
Finally, something in this AI bubble that actually interests me.
code.claude.com/docs/en/agent-…
Barcelona, Spain 🇪🇸 English
@MarcJBrooker We know you have plenty of stuff to do, but we could totally do a small fundraiser here for you to join @GergelyOrosz podcast, just saying
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This is even more impressive when you know that S3 processes over 100,000,000 requests per second.
Light travels less than 10 feet in the time between requests arriving at S3.
Gergely Orosz@GergelyOrosz
On 1 Dec 2020, AWS S3 announced that all writes to S3 are now strongly consistent (not eventually consistent, like before) *at no price change or latency changes* to any customers. Pulling this off was probably one of the biggest invisible engineering achievements of the decade
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Hackers we are, we tend to ignore or try to subvert our history/tradition every day, but the Unix Philosophy still matters
Glauber Costa@glcst
Filesystem may or may not be the best way for agents to work. I lean towards thinking it is, but that is immaterial. The thing is, since the Unix revolution, we created decades of tools and processes based on the idea of files. Abstracting agent state as a file gives agents immediate access to all of that. Choosing a different abstraction means that everything has to be rebuilt. This is why we are building AgentFS as a core abstraction to allow agents to have a filesystem that works anywhere agents want to be, with the primitives that agents need (sharing, isolation, fast access, etc).
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@samlambert I use your hat at touristic places in Barcelona, it should count during screening
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How PlanetScale does hiring:
- No coding tests or white boarding
- Bias towards high talent/experience
- Lots of referrals
- Speed: some people get offers same day
- We heavily source and reach out to people proactively. I spend roughly 25% of my time sourcing candidates.
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@levelsio The people on welfare are the ones that lived in the land in the first place. So first you strip the land, than you strip the livelihood and rights? What a great democracy are you suggesting us to build here. Get out of my lawn and go figure what to do with your wetland. 🇧🇷
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You see this actively happening in Brazil and others parts of South America where
1) part of the voter populace is less educated
2) politicans figured out if they promise to continue or expand free money to those people, they will
3) all vote for them to get into power, resulting in
4) the country slowly going bankrupt and its currency continually getting devalued, and long term
5) the country as a whole becoming poorer compared to the rest of the world
So yes people receiving free money should not be able to vote
It bankrupts countries once politicans discover this cheat code to get elected, it's literally a cheat code!
Kostas Moros@MorosKostas
My spiciest deeply-held view is that being on welfare should void your right to vote until you are off of it (not counting retirement benefits and certain Veteran's programs). The status quo is too busted. Politicians are incentivized to try and purchase votes by handing out free shit that is paid for by the taxpayers (or increasingly, unsustainable debt). Then people on welfare are incentivized to vote for whoever will keep handing it to them. It's perverse.
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@eatonphil I honestly wish this course had a follow along version, like app.codecrafters.io/courses/redis/…. I gave it multiple shots but never managed to complete it by myself.
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DDIA, the MIT distributed systems course reading list, and CMU lecture videos are good starting points for backend developers wanting to learn databases / distributed systems.
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@lucas_montano Uma casa no litoral gaúcho, uns doguinhos, churrasco, chimarrão, amigos e família
Português
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Where can I learn about how AI companies use caching, KV stores, and databases differently for LLMs, agentic workloads?
Someone also mentioned to me that old/traditional services aren't suited for these, so they also build databases internally. (e.g., OpenAI acquired Rockset)
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"GPT-4," on a relic of a computing device, a "MacBook Pro." It wakes, speaking an arcane, almost-English dialect, a ghost from a time that is now a myth.
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The year is 2100. Across the globe, desperate militias attack datacenters, burning them to access the last remaining sources of drinkable water and steal energy from the failing grid. With large compute clusters now an impossibility, archaeologists discover an ancient AI model,
Phil Eaton@eatonphil
The year is 2100, the nuclear wars of 2028 destroyed our ability to run large compute clusters. Archaeologists discover an ancient AI model "GPT4" on an ancient computing device "MacBook Pro". It speaks an arcane dialect of English.
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