Simas
@paulikas.bsky.social
I just want to build distributed data systems, read books, and drink tea.
Rustacen in training.
Rustacen in training.
Reposted by Simas
enjoyable little video on how wool gets graded and sorted
IG community_clothing and campaignforwool
IG community_clothing and campaignforwool
November 18, 2025 at 8:11 PM
enjoyable little video on how wool gets graded and sorted
IG community_clothing and campaignforwool
IG community_clothing and campaignforwool
Reposted by Simas
A deep dive into Apache Kafka's KRaft protocol
developers.redhat.com/articles/202... - Good article from Federico Valeri
developers.redhat.com/articles/202... - Good article from Federico Valeri
A deep dive into Apache Kafka's KRaft protocol | Red Hat Developer
Learn about the Apache Kafka's KRaft protocol, a consensus algorithm that ensures fault tolerance and consistency in a network of interconnected nodes
developers.redhat.com
November 18, 2025 at 4:27 PM
A deep dive into Apache Kafka's KRaft protocol
developers.redhat.com/articles/202... - Good article from Federico Valeri
developers.redhat.com/articles/202... - Good article from Federico Valeri
Reposted by Simas
New database leaderboard from Yellowbrick ranks the quality of DBMS optimizer estimates and plans. They only evaluate TPC-H for now and report results for Postgres + DuckDB + MSSQL: sql-arena.com/components/p...
Repo: github.com/sql-arena/db...
LinkedIn Group: www.linkedin.com/groups/15775...
Repo: github.com/sql-arena/db...
LinkedIn Group: www.linkedin.com/groups/15775...
November 3, 2025 at 5:07 PM
New database leaderboard from Yellowbrick ranks the quality of DBMS optimizer estimates and plans. They only evaluate TPC-H for now and report results for Postgres + DuckDB + MSSQL: sql-arena.com/components/p...
Repo: github.com/sql-arena/db...
LinkedIn Group: www.linkedin.com/groups/15775...
Repo: github.com/sql-arena/db...
LinkedIn Group: www.linkedin.com/groups/15775...
Reposted by Simas
Our SIGMOD paper with our friends at Tsinghua + @wesmckinney.com + @pateljm.bsky.social on creating a next generation open-source data file format is out. F3 is a future-proof file format avoids the mistakes of Parquet.
📄 Paper: db.cs.cmu.edu/papers/2025/...
📁 Code: github.com/future-file-...
📄 Paper: db.cs.cmu.edu/papers/2025/...
📁 Code: github.com/future-file-...
October 1, 2025 at 1:49 PM
Our SIGMOD paper with our friends at Tsinghua + @wesmckinney.com + @pateljm.bsky.social on creating a next generation open-source data file format is out. F3 is a future-proof file format avoids the mistakes of Parquet.
📄 Paper: db.cs.cmu.edu/papers/2025/...
📁 Code: github.com/future-file-...
📄 Paper: db.cs.cmu.edu/papers/2025/...
📁 Code: github.com/future-file-...
Reposted by Simas
The tech industry’s embrace of President Trump has left many of us asking the same question: What the hell happened to Silicon Valley? On Sept. 23 at 11 AM, our WIRED experts get into it. wrd.cm/4mslR0k
Have questions? Drop them below 👇🏼
Have questions? Drop them below 👇🏼
September 22, 2025 at 4:00 PM
The tech industry’s embrace of President Trump has left many of us asking the same question: What the hell happened to Silicon Valley? On Sept. 23 at 11 AM, our WIRED experts get into it. wrd.cm/4mslR0k
Have questions? Drop them below 👇🏼
Have questions? Drop them below 👇🏼
Reposted by Simas
Next week is the start of @db.cs.cmu.edu's latest seminar series: Future Data Systems
@samarchdb.bsky.social and I are hosting speakers from leading systems in the datalake / lakehouse space.
Mondays @ 4:30pm ET via Zoom. Open to the public. Videos posted to YouTube: db.cs.cmu.edu/seminars/fal...
@samarchdb.bsky.social and I are hosting speakers from leading systems in the datalake / lakehouse space.
Mondays @ 4:30pm ET via Zoom. Open to the public. Videos posted to YouTube: db.cs.cmu.edu/seminars/fal...
September 17, 2025 at 11:15 PM
Next week is the start of @db.cs.cmu.edu's latest seminar series: Future Data Systems
@samarchdb.bsky.social and I are hosting speakers from leading systems in the datalake / lakehouse space.
Mondays @ 4:30pm ET via Zoom. Open to the public. Videos posted to YouTube: db.cs.cmu.edu/seminars/fal...
@samarchdb.bsky.social and I are hosting speakers from leading systems in the datalake / lakehouse space.
Mondays @ 4:30pm ET via Zoom. Open to the public. Videos posted to YouTube: db.cs.cmu.edu/seminars/fal...
Reposted by Simas
Get in, losers. We're posting John Berkey spaceships.
September 13, 2025 at 12:08 AM
Get in, losers. We're posting John Berkey spaceships.
Reposted by Simas
This paper is pretty exciting. Near-zero-carbon steel production costs only 36% more than steel from a blast furnace (under reasonable electricity price assumptions); a carbon tax like the one in the EU is already enough to make it cost-competitive. www.sciencedirect.com/science/arti...
Assessment of hydrogen direct reduction for fossil-free steelmaking
Climate policy objectives require zero emissions across all sectors including steelmaking. The fundamental process changes needed for reaching this ta…
www.sciencedirect.com
September 3, 2025 at 8:26 PM
This paper is pretty exciting. Near-zero-carbon steel production costs only 36% more than steel from a blast furnace (under reasonable electricity price assumptions); a carbon tax like the one in the EU is already enough to make it cost-competitive. www.sciencedirect.com/science/arti...
Reposted by Simas
How can #ELearning make studying math easier? 💡 Read our interview with Florian Lindemann from our Department of #Mathematics, on a new platform funded by the 2025/26 Ideas Competition, which supports #InnovativeTeaching formats: go.tum.de/989485
📷N. Neudert
📷N. Neudert
How a platform is transforming mathematics education
A new e-learning platform for mathematics makes studying easier for TUM students. What’s the idea behind it? Project leader Dr. Lindemann explains.
go.tum.de
August 28, 2025 at 10:09 AM
How can #ELearning make studying math easier? 💡 Read our interview with Florian Lindemann from our Department of #Mathematics, on a new platform funded by the 2025/26 Ideas Competition, which supports #InnovativeTeaching formats: go.tum.de/989485
📷N. Neudert
📷N. Neudert
Reposted by Simas
Today is the new semester for @db.cs.cmu.edu's Intro to Database Systems! We're going harder into material than before. More challenging projects but you can use LLMs to help. We also have 10min talks each Wed from leading DB companies: 15445.courses.cs.cmu.edu/fall2025
CMU 15-445/645 :: Intro to Database Systems (Fall 2025)
You want to know whether this is the premier course at Carnegie Mellon University on the design and implementation of database management systems? Well, it is. This course rips through data models (re...
15445.courses.cs.cmu.edu
August 25, 2025 at 2:29 PM
Today is the new semester for @db.cs.cmu.edu's Intro to Database Systems! We're going harder into material than before. More challenging projects but you can use LLMs to help. We also have 10min talks each Wed from leading DB companies: 15445.courses.cs.cmu.edu/fall2025
Reposted by Simas
Antithesis and Jepsen are releasing a glossary of terms useful in distributed systems testing: https://antithesis.com/resources/reliability_glossary/
A distributed systems reliability glossary
A list of key concepts for building and testing reliable distributed systems, with basic definitions and deep references.
antithesis.com
July 15, 2025 at 2:45 PM
Antithesis and Jepsen are releasing a glossary of terms useful in distributed systems testing: https://antithesis.com/resources/reliability_glossary/
Reposted by Simas
Reposted by Simas
At last @abigalekim.bsky.social's paper is out! Its the most complete eval of DB extensions/plugins ever. We analyze PostgreSQL, MySQL, MariaDB, SQLite, DuckDB, Redis.
TLDR: Postgres extns ecosystem is fraught with footguns. Other DBMSs have fewer extns but less problems. DuckDB has cleanest API.
TLDR: Postgres extns ecosystem is fraught with footguns. Other DBMSs have fewer extns but less problems. DuckDB has cleanest API.
Vol:18 No:6 → Anarchy in the Database: A Survey and Evaluation of Database Management System Extensibility
👥 Authors: Abigale Kim, Marco Slot, David Andersen, Andrew Pavlo
📄 PDF: https://www.vldb.org/pvldb/vol18/p1962-kim.pdf
👥 Authors: Abigale Kim, Marco Slot, David Andersen, Andrew Pavlo
📄 PDF: https://www.vldb.org/pvldb/vol18/p1962-kim.pdf
July 3, 2025 at 7:03 PM
At last @abigalekim.bsky.social's paper is out! Its the most complete eval of DB extensions/plugins ever. We analyze PostgreSQL, MySQL, MariaDB, SQLite, DuckDB, Redis.
TLDR: Postgres extns ecosystem is fraught with footguns. Other DBMSs have fewer extns but less problems. DuckDB has cleanest API.
TLDR: Postgres extns ecosystem is fraught with footguns. Other DBMSs have fewer extns but less problems. DuckDB has cleanest API.
Reposted by Simas
Periodic reminder that I have a list of database startups at transactional.blog/blog/2024-da.... If you're aware of any that I've missed (especially ones founded 2024/2025), please let me know!
Database Startups
transactional.blog
May 24, 2025 at 9:34 PM
Periodic reminder that I have a list of database startups at transactional.blog/blog/2024-da.... If you're aware of any that I've missed (especially ones founded 2024/2025), please let me know!
Reposted by Simas
Reposted by Simas
Elixir and Rust is a good mix
Make your Elixir projects even faster using Rust!
fly.io
April 21, 2025 at 4:11 PM
Reposted by Simas
Reposted by Simas
yeah! what is it about them? 🤔
March 13, 2025 at 4:22 PM
yeah! what is it about them? 🤔
Reposted by Simas
Help me out: what companies in Europe (or with a large Europe presence) are not "database companies" but build databases internally.
I'll go first:
- Cloudflare in Lisbon
- DataDog in Paris
- Elastic in Amsterdam
- Dynatrace in Linz
- Grafana in Stockholm
I'll go first:
- Cloudflare in Lisbon
- DataDog in Paris
- Elastic in Amsterdam
- Dynatrace in Linz
- Grafana in Stockholm
March 6, 2025 at 2:54 PM
Help me out: what companies in Europe (or with a large Europe presence) are not "database companies" but build databases internally.
I'll go first:
- Cloudflare in Lisbon
- DataDog in Paris
- Elastic in Amsterdam
- Dynatrace in Linz
- Grafana in Stockholm
I'll go first:
- Cloudflare in Lisbon
- DataDog in Paris
- Elastic in Amsterdam
- Dynatrace in Linz
- Grafana in Stockholm
Reposted by Simas
The biggest reason why I dislike the idea of respectability in dress is because it conflates the *appearance* of virtue with *actual* virtue. Wearing a suit doesn't make you respectful, intelligent, or capable, just as wearing a leather jacket doesn't make you rugged.
March 1, 2025 at 1:00 AM
The biggest reason why I dislike the idea of respectability in dress is because it conflates the *appearance* of virtue with *actual* virtue. Wearing a suit doesn't make you respectful, intelligent, or capable, just as wearing a leather jacket doesn't make you rugged.
Reposted by Simas
For eight decades, alliances have formed the bedrock of American foreign, trade and cultural policy. But not any more. Europeans, but also America's Asian allies, need to accept this new world, and learn how to live in it.
www.theatlantic.com/internationa...
www.theatlantic.com/internationa...
The End of the Postwar World
Trump’s cruelty and lies about Ukraine send a dark message to America’s other allies.
www.theatlantic.com
February 20, 2025 at 12:43 PM
For eight decades, alliances have formed the bedrock of American foreign, trade and cultural policy. But not any more. Europeans, but also America's Asian allies, need to accept this new world, and learn how to live in it.
www.theatlantic.com/internationa...
www.theatlantic.com/internationa...
Reposted by Simas
A remarkably comprehensive write-up of what xor is and why it’s useful www.chiark.greenend.org.uk/~sgtatham/qu...
XOR
www.chiark.greenend.org.uk
February 18, 2025 at 8:43 AM
A remarkably comprehensive write-up of what xor is and why it’s useful www.chiark.greenend.org.uk/~sgtatham/qu...
Reposted by Simas
Seph Gentle made a video in which he builds a CRDT for collaborative text editing from scratch www.youtube.com/watch?v=_lQ2...
Text CRDTs from scratch, in code!
YouTube video by Joseph Gentle
www.youtube.com
February 12, 2025 at 10:32 PM
Seph Gentle made a video in which he builds a CRDT for collaborative text editing from scratch www.youtube.com/watch?v=_lQ2...
Reposted by Simas
"the assumption that a cease-fire will end Russia’s primary threat to Ukrainians misunderstands the nature of the conflict"
From Nataliya Gumenyuk. A warning
www.foreignaffairs.com/ukraine/puti...
From Nataliya Gumenyuk. A warning
www.foreignaffairs.com/ukraine/puti...
Putin’s Ukraine
The end of war and the price of Russian occupation.
www.foreignaffairs.com
February 13, 2025 at 12:01 AM
"the assumption that a cease-fire will end Russia’s primary threat to Ukrainians misunderstands the nature of the conflict"
From Nataliya Gumenyuk. A warning
www.foreignaffairs.com/ukraine/puti...
From Nataliya Gumenyuk. A warning
www.foreignaffairs.com/ukraine/puti...