Yaroslav Tkachenko
@sap1ens.com
Founder at Irontools. Data Streaming Advocate. Building data platforms. Writing about data engineering, real-time data and distributed systems.
Building: https://irontools.dev
Website & blog: https://sap1ens.com
Newsletter: https://streamingdata.tech
Building: https://irontools.dev
Website & blog: https://sap1ens.com
Newsletter: https://streamingdata.tech
Claude understands me.
December 24, 2025 at 5:15 PM
Claude understands me.
Reposted by Yaroslav Tkachenko
🎄Interesting Links in the data world for December 2025 is here!
There's some awesomely excellent content that you'll not want to miss. Grab a mince pie and dive in :)
🔗 rmoff.net/2025/12/16/i...
There's some awesomely excellent content that you'll not want to miss. Grab a mince pie and dive in :)
🔗 rmoff.net/2025/12/16/i...
Interesting links - December 2025
rmoff.net
December 17, 2025 at 11:02 AM
🎄Interesting Links in the data world for December 2025 is here!
There's some awesomely excellent content that you'll not want to miss. Grab a mince pie and dive in :)
🔗 rmoff.net/2025/12/16/i...
There's some awesomely excellent content that you'll not want to miss. Grab a mince pie and dive in :)
🔗 rmoff.net/2025/12/16/i...
Does anyone have experience with github.com/plv8/plv8? I'm curious about performance.
GitHub - plv8/plv8: V8 Engine Javascript Procedural Language add-on for PostgreSQL
V8 Engine Javascript Procedural Language add-on for PostgreSQL - plv8/plv8
github.com
December 16, 2025 at 5:12 AM
Does anyone have experience with github.com/plv8/plv8? I'm curious about performance.
Maybe, just maybe, having code review as the bottleneck is a... good thing?
Not knowing what part of the code is AI-generated vs not is problematic when devs start to generate a LOT more code using AI
Everyone says reviewing is the bottleneck - which is true!
Either we need to generate less verbose code, or just throw out code review for at else…
Everyone says reviewing is the bottleneck - which is true!
Either we need to generate less verbose code, or just throw out code review for at else…
December 14, 2025 at 7:16 PM
Maybe, just maybe, having code review as the bottleneck is a... good thing?
Arrow + JavaScript WASM is quite easy now: github.com/uwdata/flech...
GitHub - uwdata/flechette: Fast, lightweight access to Apache Arrow data.
Fast, lightweight access to Apache Arrow data. Contribute to uwdata/flechette development by creating an account on GitHub.
github.com
December 12, 2025 at 10:38 PM
Arrow + JavaScript WASM is quite easy now: github.com/uwdata/flech...
Reposted by Yaroslav Tkachenko
Do you like databases?
Do you want to hear two database professors rant about them?
Do you need one of those professors to have a Turing Award for databases?
If yes, then join Mike Stonebraker and I next Wed Dec 10 @ 1:00pm EST for database hot takes: www.dbos.dev/webcast-2025...
Do you want to hear two database professors rant about them?
Do you need one of those professors to have a Turing Award for databases?
If yes, then join Mike Stonebraker and I next Wed Dec 10 @ 1:00pm EST for database hot takes: www.dbos.dev/webcast-2025...
2025 in Review with Mike Stonebraker and Andy Pavlo
Webcast Dec 10: DBMS researchers Mike Stonebraker (MIT / DBOS) and Andy Pavlo (CMU) discuss which data and CS trends are heating up or cooling down heading into 2026.
www.dbos.dev
December 5, 2025 at 11:29 PM
Do you like databases?
Do you want to hear two database professors rant about them?
Do you need one of those professors to have a Turing Award for databases?
If yes, then join Mike Stonebraker and I next Wed Dec 10 @ 1:00pm EST for database hot takes: www.dbos.dev/webcast-2025...
Do you want to hear two database professors rant about them?
Do you need one of those professors to have a Turing Award for databases?
If yes, then join Mike Stonebraker and I next Wed Dec 10 @ 1:00pm EST for database hot takes: www.dbos.dev/webcast-2025...
I guess it's that time of the year
December 4, 2025 at 5:21 PM
I guess it's that time of the year
I've seen a lot of criticism directed towards Apache Flink recently. Here's something I have to say: Flink is not going anywhere.
www.streamingdata.tech/p/why-apache...
www.streamingdata.tech/p/why-apache...
Why Apache Flink Is Not Going Anywhere
Not in the next few years.
www.streamingdata.tech
December 3, 2025 at 4:31 PM
I've seen a lot of criticism directed towards Apache Flink recently. Here's something I have to say: Flink is not going anywhere.
www.streamingdata.tech/p/why-apache...
www.streamingdata.tech/p/why-apache...
The only newsletter I actually pay for. Highly recommend.
The Pragmatic Engineer Black Friday deal is live!
Get a year-long subscription for $120 (instead of $150). A sub gives you access to all deepdives, The Pulse, and resources for software engineers and eng managers. Available till Monday.
Get it here: newsletter.pragmaticengineer.com/0ea36188
Get a year-long subscription for $120 (instead of $150). A sub gives you access to all deepdives, The Pulse, and resources for software engineers and eng managers. Available till Monday.
Get it here: newsletter.pragmaticengineer.com/0ea36188
November 27, 2025 at 11:26 PM
The only newsletter I actually pay for. Highly recommend.
New post coming soon
November 26, 2025 at 6:42 PM
New post coming soon
Has anyone tried github.com/uwheel/uwheel?
GitHub - uwheel/uwheel: Embeddable Aggregate Management System for Streams and Queries.
Embeddable Aggregate Management System for Streams and Queries. - uwheel/uwheel
github.com
November 19, 2025 at 9:20 PM
Has anyone tried github.com/uwheel/uwheel?
The Advanced Apache Flink Bootcamp is now open for registration! The first cohort is scheduled for January 21st - 22nd, 2026.
#ApacheFlink
#ApacheFlink
November 18, 2025 at 6:28 PM
The Advanced Apache Flink Bootcamp is now open for registration! The first cohort is scheduled for January 21st - 22nd, 2026.
#ApacheFlink
#ApacheFlink
Reposted by Yaroslav Tkachenko
2 Minute Deep Acid in Strudel (from scratch)
YouTube video by Switch Angel
www.youtube.com
November 15, 2025 at 7:49 PM
Reposted by Yaroslav Tkachenko
🚀 Launching Supermetal — data replication that just works.
Sync databases to warehouses in real-time or batch — no Kafka, no JVM, no Debezium. Built in Rust & Apache Arrow.
Try it → trial.supermetal.io
Launch post → supermetal.io/blog/launch
Sync databases to warehouses in real-time or batch — no Kafka, no JVM, no Debezium. Built in Rust & Apache Arrow.
Try it → trial.supermetal.io
Launch post → supermetal.io/blog/launch
Supermetal - High Performance Data Replication Platform
Move terabytes of data with minimal resources using our Rust-based CDC platform. Single binary, zero dependencies.
supermetal.io
November 5, 2025 at 6:50 PM
🚀 Launching Supermetal — data replication that just works.
Sync databases to warehouses in real-time or batch — no Kafka, no JVM, no Debezium. Built in Rust & Apache Arrow.
Try it → trial.supermetal.io
Launch post → supermetal.io/blog/launch
Sync databases to warehouses in real-time or batch — no Kafka, no JVM, no Debezium. Built in Rust & Apache Arrow.
Try it → trial.supermetal.io
Launch post → supermetal.io/blog/launch
If you are in Vancouver on November 19th, you may want to check this Apache Kafka meetup! www.meetup.com/vancouver-ka...
Streaming in the Real World: Reliability Lessons from Kafka and WarpStream, Wed, Nov 19, 2025, 6:00 PM | Meetup
Join us for an Apache Kafka® meetup on November 19th from 6:00pm hosted by Salesforce!
**📍 Venue:**
Salesforce
333 Seymour St #700, Vancouver, BC V6B 5A7
Social Lounge
*
www.meetup.com
November 5, 2025 at 4:01 AM
If you are in Vancouver on November 19th, you may want to check this Apache Kafka meetup! www.meetup.com/vancouver-ka...
My regular post-Current report is live: www.streamingdata.tech/p/current-ne...
Current New Orleans 2025
Conference highlights.
www.streamingdata.tech
November 3, 2025 at 4:53 PM
My regular post-Current report is live: www.streamingdata.tech/p/current-ne...
Great conversation with Jan on all things Flink and data streaming youtu.be/X6Ukpi2p4y4
Yaroslav Tkachenko on Upstream: Recent innovations in the Flink ecosystem
YouTube video by Kentra
youtu.be
November 3, 2025 at 4:28 PM
Great conversation with Jan on all things Flink and data streaming youtu.be/X6Ukpi2p4y4
Reposted by Yaroslav Tkachenko
📝 Blogged: "'You Don't Need Kafka, Just Use Postgres' Considered Harmful"
In which I'm arguing that both Postgres and Kafka are great tools for their respective purposes. But don't create your custom implementation of one on top of the other.
👉 www.morling.dev/blog/you-don...
In which I'm arguing that both Postgres and Kafka are great tools for their respective purposes. But don't create your custom implementation of one on top of the other.
👉 www.morling.dev/blog/you-don...
November 3, 2025 at 10:20 AM
📝 Blogged: "'You Don't Need Kafka, Just Use Postgres' Considered Harmful"
In which I'm arguing that both Postgres and Kafka are great tools for their respective purposes. But don't create your custom implementation of one on top of the other.
👉 www.morling.dev/blog/you-don...
In which I'm arguing that both Postgres and Kafka are great tools for their respective purposes. But don't create your custom implementation of one on top of the other.
👉 www.morling.dev/blog/you-don...
I'm very excited about the upcoming webinar: "The State of Stream Processing", recorded with brilliant @olenakutsenko.bsky.social and @gunnarmorling.dev.
October 31, 2025 at 1:05 PM
I'm very excited about the upcoming webinar: "The State of Stream Processing", recorded with brilliant @olenakutsenko.bsky.social and @gunnarmorling.dev.
October 27, 2025 at 4:29 PM
Shared some thoughts about Flink Forward that happened last week: www.streamingdata.tech/p/flink-forw...
Flink Forward 2025
Conference highlights.
www.streamingdata.tech
October 22, 2025 at 3:54 PM
Shared some thoughts about Flink Forward that happened last week: www.streamingdata.tech/p/flink-forw...
Reposted by Yaroslav Tkachenko
Today's Future Data Systems Seminar Speaker: Ian Cook (@ian.columnar.tech) will present @columnar.tech's work on Apache Arrow's database connectivity API (ADBC). ADBC is available in modern DBMSs. Zoom talk open to public at 4:30pm ET. YouTube video available after: db.cs.cmu.edu/events/futur...
[Future Data] Where We're Going, We Don't Need Rows: Columnar Data Connectivity with ADBC - Carnegie Mellon Database Group
ADBC (Arrow Database Connectivity) is Apache Arrow’s answer to ODBC and JDBC:... Read More +
db.cs.cmu.edu
October 20, 2025 at 11:38 AM
Today's Future Data Systems Seminar Speaker: Ian Cook (@ian.columnar.tech) will present @columnar.tech's work on Apache Arrow's database connectivity API (ADBC). ADBC is available in modern DBMSs. Zoom talk open to public at 4:30pm ET. YouTube video available after: db.cs.cmu.edu/events/futur...
At Polyglot Vancouver
October 11, 2025 at 4:03 PM
At Polyglot Vancouver