Cainã Costa (@cfcosta_) header
Cainã Costa (@cfcosta_) profile picture

Distributed Systems, Fintech, AI, formerly Crypto.

Brazil
Joined October 2021
docbert v0.9 📚 Local document search — point it at your files, search from the terminal, web app, or MCP-connected agent. Nothing leaves your machine. 🔄 Multiple docbert binaries can share one data dir (run mcp + web together) 🧬 Chunks are content-addressed, so embeddings dedupe across documents and embeddings.db is portable between machines 🛠 Storage swapped from redb to LMDB ⚙ Nix flake stops trashing the build cache on local dev work cfcosta.com/blog/docbert-v09…
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I find that hard to believe, deploying on Friday? As if.
JUST IN - The FBI reportedly doesn’t believe a cyberattack or criminal activity caused the nationwide FAA outage, and is investigating whether a software update crashed the system.
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Cainã Costa retweeted
I'm begging Jensen Huang to reconcile with his wife. we cannot afford another billionaire ex-wife entering her "I'm going to fix society by funding its most annoying people" era
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Getting up the chair and going to the gym. Hardest exercise ever
To all my gym goers what's one exercise that change your physique the most?
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Cainã Costa retweeted
It’s not just NVIDIA. Sources confirm Google's Gemini team was also leaking confidential information to China. China is reportedly asking them to stop.
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Except me, only high level tech advice on this profile. Here's one for free: Go sucks.
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Cainã Costa retweeted
If you’re actively trying to stop AI development, you’re my enemy and an enemy of humanity. I consider what you’re doing a direct attack on humanity’s future. Every disease that could have been cured, every life that could have been saved, every person who could have escaped poverty. Every opportunity lost is a direct consequence of your actions, and those lives are on your shoulders. You’re willing to sacrifice all of that because you’re terrified of progress. I have absolutely zero tolerance for this. Your movement deserves to be politically defeated, intellectually dismantled, and remembered as one of the greatest obstacles to human progress in history.
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"Just get a bigger machine" is a perfectly reasonable way to scale stuff. You don't need to make systems distributed, you only should do it if you have a really good reason. For most services, you can get THOUSANDS of users at once, just don't do slow things.
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The problem with AI is that it’s causing this massive brain drain where our brightest kids are working on curing cancer and creating abundant energy instead of building derivatives exchanges
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I’m pro-capitalism because I want billionaires competing to lower my bills. I’m not joining a revolution to get one state provider and a lecture on the warmth of collectivism.
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To Brazil’s victor goes political revenge. Lula’s government targets losing opponent Flávio Bolsonaro. on.wsj.com/4f0HvaW
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Não sou não, jogue jogos estúpidos, ganhe prêmios estúpidos
Não torça para o Brasil piorar nos próximos 4 anos por pura birra. Você é melhor que isso!
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Cainã Costa retweeted
In tonight's Brazil presidential elections, something that looks like a coup just happened The ruling left wing candidate Lula kept the polling booths open 2 extra hours to get more votes in places where he was predicted to win (7pm) While closing the polling booths in places where his opponent Bolsonaro was predicted to win at the right time (5pm) Of course this will likely give Lula the edge he needed to win in a tight 50-50 race which everyone predicted he was going to lose from Bolsonaro Complete banana republic stuff, can't make this up! 🍌
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Cainã Costa retweeted
if you have a qwen3.5 4b around, please try steering neurons L14 N8949 +1 and L13 N7956 -1 now you have evil qwen recipe: dose × median(‖resid‖ leaving layer L, tokens 1:) / ‖W_down[:, n]‖` at the down_proj at every input
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Rapaz, Lula ta apanhando feio nesse debate. Que diferença tirar o Marçal da preparação fez. Até os trejeitos do Tarcisio o Flávio tá copiando.
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President @LulaOficial is linked to a drug cartel the U.S. has designated a "Foreign Terrorist Organization," and yet Brazil's election court has prevented his presidential rival, @FlavioBolsonaro from saying so. Censorship of the Lula-PCC link began under Alexandre de Moraes.
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Things are getting crazier
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Já vi vídeo do Estado Islâmico decapitando gente e foi menos traumatizante que assistir isso.
felca: tenho depressão Felipe neto: quando nossa luta é verdadeira
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Cainã Costa retweeted
You've gotta patch your dependencies super fast because they're full of vulns (PHP, Node, eMudhra, etc), but not _too_ fast because they're full of backdoors (LiteLLM). Good luck!
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