Jakub Čecháček
@jakub.cechacek.net
Software engineer · @debezium.bsky.social Maintainer · Former Red Hat · Co-Organizer of @CZJUG.bsky.social
Reposted by Jakub Čecháček
MongoDB licensing costs spiraling out of control? 😵💫 There's a better way.
Join our 30-minute on-demand webinar to discover how Percona Server for MongoDB delivers enterprise-grade features without vendor lock-in.
Watch now & take back control of your data infrastructure!
🔗 https://bit.ly/43MJjyK
Join our 30-minute on-demand webinar to discover how Percona Server for MongoDB delivers enterprise-grade features without vendor lock-in.
Watch now & take back control of your data infrastructure!
🔗 https://bit.ly/43MJjyK
November 13, 2025 at 4:55 PM
MongoDB licensing costs spiraling out of control? 😵💫 There's a better way.
Join our 30-minute on-demand webinar to discover how Percona Server for MongoDB delivers enterprise-grade features without vendor lock-in.
Watch now & take back control of your data infrastructure!
🔗 https://bit.ly/43MJjyK
Join our 30-minute on-demand webinar to discover how Percona Server for MongoDB delivers enterprise-grade features without vendor lock-in.
Watch now & take back control of your data infrastructure!
🔗 https://bit.ly/43MJjyK
This @czjug.bsky.social ☕ meetup at @sentinelone.com turned out to be absolutely amazing 🌟 and we had the most pople show up since before covid 🎉. Seems the community loves hardcore stuff like profiling ‼️
November 11, 2025 at 6:48 PM
This @czjug.bsky.social ☕ meetup at @sentinelone.com turned out to be absolutely amazing 🌟 and we had the most pople show up since before covid 🎉. Seems the community loves hardcore stuff like profiling ‼️
Another packed Java ☕️meetup at Sky Czech Republic.
October 16, 2025 at 4:43 PM
Another packed Java ☕️meetup at Sky Czech Republic.
Get ready for another #CZJUG ☕ meetup. And this one is going to be a banger 🥊. Three frameworks ⚙️, three champions 👑, one result 🏆. Fighting arena and medical services 🚑 will be provided by Tricentis.
www.meetup.com/czjug-prague...
www.meetup.com/czjug-prague...
⚔️ Battle of frameworks, Wed, Oct 1, 2025, 5:30 PM | Meetup
CZJUG Prague on tour are usual CZJUG Prague meetups taking place at a location hosted by one of our partner companies.
This time, our CZJUG on tour meetup will be hosted b
www.meetup.com
September 24, 2025 at 8:56 AM
Get ready for another #CZJUG ☕ meetup. And this one is going to be a banger 🥊. Three frameworks ⚙️, three champions 👑, one result 🏆. Fighting arena and medical services 🚑 will be provided by Tricentis.
www.meetup.com/czjug-prague...
www.meetup.com/czjug-prague...
Reposted by Jakub Čecháček
Cross-cluster MongoDB on Kubernetes, simplified.
See how the Percona Operator connects two GKE clusters with Multi-Cluster Services. https://bit.ly/4pn6SHP
See how the Percona Operator connects two GKE clusters with Multi-Cluster Services. https://bit.ly/4pn6SHP
Deploying Percona Operator for MongoDB Across GKE Clusters with MCS
How to deploy Percona Operator for MongoDB in two GKE clusters, linking them using MCS.
bit.ly
September 21, 2025 at 5:15 PM
Cross-cluster MongoDB on Kubernetes, simplified.
See how the Percona Operator connects two GKE clusters with Multi-Cluster Services. https://bit.ly/4pn6SHP
See how the Percona Operator connects two GKE clusters with Multi-Cluster Services. https://bit.ly/4pn6SHP
Reposted by Jakub Čecháček
Search that understands meaning instead of just words. This new Red Hat blog shows how EDB Postgres AI and Red Hat OpenShift AI work together to power semantic and visual search for fashion—and any catalog where “looks like” matters more than exact wording: developers.redhat.com/articles/202...
AI search with style: Fashion on OpenShift AI with EDB | Red Hat Developer
Explore a fashion AI search on Red Hat OpenShift AI with EDB Postgres AI
developers.redhat.com
September 15, 2025 at 9:56 AM
Search that understands meaning instead of just words. This new Red Hat blog shows how EDB Postgres AI and Red Hat OpenShift AI work together to power semantic and visual search for fashion—and any catalog where “looks like” matters more than exact wording: developers.redhat.com/articles/202...
🛫 to the madness of London 🇬🇧on strike🚇. Fortunately the #IcebergMeetup should make up for it.
September 8, 2025 at 7:33 AM
🛫 to the madness of London 🇬🇧on strike🚇. Fortunately the #IcebergMeetup should make up for it.
The #DataGeeksMunich meetup was great! First a very well framed talk about process mining, and then Ismail Simsek showcased his @debezium.bsky.social Iceberg consumer. Always nice to see our community grow the project further🚀
August 2, 2025 at 8:21 AM
The #DataGeeksMunich meetup was great! First a very well framed talk about process mining, and then Ismail Simsek showcased his @debezium.bsky.social Iceberg consumer. Always nice to see our community grow the project further🚀
Štěpán Šindelář is demonstrating live why ☕️Java ❤️ Python🐍 at yet another @czjug.bsky.social meetup about @graalvm.org and #GraalPy
June 10, 2025 at 5:17 PM
Štěpán Šindelář is demonstrating live why ☕️Java ❤️ Python🐍 at yet another @czjug.bsky.social meetup about @graalvm.org and #GraalPy
Reposted by Jakub Čecháček
Turns out @duckdb.org is a Protocol masquerading as a Database. Checkout our CEO and Co-founder, @avery.summer.io's post about DuckDB and its implications on the future of data products.
June 10, 2025 at 2:59 PM
Turns out @duckdb.org is a Protocol masquerading as a Database. Checkout our CEO and Co-founder, @avery.summer.io's post about DuckDB and its implications on the future of data products.
In case you are still not sure 🤔 about going. Today's @czjug.bsky.social ☕ event is also sponsored by @jetbrains.com and we will have some goodies 🚀 for you.
⭐ Also big thanks to our other sponsors Sky Czech Republic 🍕 and Oracle 🏢
⭐ Also big thanks to our other sponsors Sky Czech Republic 🍕 and Oracle 🏢
Just a reminder ⏱️ that the next #CZJUG talk 🎙️ about Java ☕ and Python 🐍 is happening tomorrow! As usual, after the talk we will continue chatting over some 🍻.
www.meetup.com/czjug-prague...
www.meetup.com/czjug-prague...
CZJUG on tour: GraalPy: Java ❤️ Python, Tue, Jun 10, 2025, 6:00 PM | Meetup
CZJUG Prague on tour are usual CZJUG Prague meetups taking place at a location hosted by one of our partner companies.
This time, our CZJUG on tour meetup will be hosted b
www.meetup.com
June 10, 2025 at 11:44 AM
In case you are still not sure 🤔 about going. Today's @czjug.bsky.social ☕ event is also sponsored by @jetbrains.com and we will have some goodies 🚀 for you.
⭐ Also big thanks to our other sponsors Sky Czech Republic 🍕 and Oracle 🏢
⭐ Also big thanks to our other sponsors Sky Czech Republic 🍕 and Oracle 🏢
Just a reminder ⏱️ that the next #CZJUG talk 🎙️ about Java ☕ and Python 🐍 is happening tomorrow! As usual, after the talk we will continue chatting over some 🍻.
www.meetup.com/czjug-prague...
www.meetup.com/czjug-prague...
CZJUG on tour: GraalPy: Java ❤️ Python, Tue, Jun 10, 2025, 6:00 PM | Meetup
CZJUG Prague on tour are usual CZJUG Prague meetups taking place at a location hosted by one of our partner companies.
This time, our CZJUG on tour meetup will be hosted b
www.meetup.com
June 9, 2025 at 9:52 AM
Just a reminder ⏱️ that the next #CZJUG talk 🎙️ about Java ☕ and Python 🐍 is happening tomorrow! As usual, after the talk we will continue chatting over some 🍻.
www.meetup.com/czjug-prague...
www.meetup.com/czjug-prague...
Next @czjug.bsky.social about ☕ and 🐍 is this just behind the corner (www.meetup.com/czjug-prague... ), however if you unfortunately happen to be in Brno that week and don't want to miss on #JVM fun, you can visit our friends at #KotlinServerSquad www.meetup.com/kotlin-serve...
Kotlin Beer Meetup - BRNO, Thu, Jun 12, 2025, 6:00 PM | Meetup
Come join us at the Kotlin Beer Meetup, where you can learn interesting facts and updates from the world of Kotlin and modern application development.
**Event Schedule:**
www.meetup.com
June 8, 2025 at 9:30 AM
Next @czjug.bsky.social about ☕ and 🐍 is this just behind the corner (www.meetup.com/czjug-prague... ), however if you unfortunately happen to be in Brno that week and don't want to miss on #JVM fun, you can visit our friends at #KotlinServerSquad www.meetup.com/kotlin-serve...
@duckdb.org is at it again 🚀. I'm really curious how this will be positioned against #Iceberg and @deltalakeoss.bsky.social. The ease of use and low barier of entry makes this very relevant IMHO 🦆🦆🦆
ducklake.select
ducklake.select
DuckLake is an integrated data lake and catalog format.
DuckLake delivers advanced data lake features without traditional lakehouse complexity by using Parquet files and your SQL database. It's an open, standalone format from the DuckDB team.
ducklake.select
May 28, 2025 at 9:49 AM
@duckdb.org is at it again 🚀. I'm really curious how this will be positioned against #Iceberg and @deltalakeoss.bsky.social. The ease of use and low barier of entry makes this very relevant IMHO 🦆🦆🦆
ducklake.select
ducklake.select
🚀 @czjug.bsky.social events continue. Join us at #Oracle Prague offices to learn 💡 from Štěpán Šindelář about bridging modern Python 🐍 and the JVM ☕ ecosystem with #GraalPy and @graalvm.org
🍕 at the venue and discussion over 🍻 afterwards .
#JUG #GraalPy #Java #Python #JVM #Prague
🍕 at the venue and discussion over 🍻 afterwards .
#JUG #GraalPy #Java #Python #JVM #Prague
CZJUG on tour: GraalPy: Java ❤️ Python, Tue, Jun 10, 2025, 6:00 PM | Meetup
CZJUG Prague on tour are usual CZJUG Prague meetups taking place at a location hosted by one of our partner companies.
This time, our CZJUG on tour meetup will be hosted b
www.meetup.com
May 22, 2025 at 9:28 AM
🚀 @czjug.bsky.social events continue. Join us at #Oracle Prague offices to learn 💡 from Štěpán Šindelář about bridging modern Python 🐍 and the JVM ☕ ecosystem with #GraalPy and @graalvm.org
🍕 at the venue and discussion over 🍻 afterwards .
#JUG #GraalPy #Java #Python #JVM #Prague
🍕 at the venue and discussion over 🍻 afterwards .
#JUG #GraalPy #Java #Python #JVM #Prague
Reposted by Jakub Čecháček
Structured data is very sneaky!
Just ask your favourite LLM.
1GB of text = ~250M tokens
1GB of structured trades = ~1B tokens
That’s 4× the token cost for less semantic richness.
Our new agentic friends have many capabilities, chewing structured data not among them.
questdb.com/blog/why-ai-...
Just ask your favourite LLM.
1GB of text = ~250M tokens
1GB of structured trades = ~1B tokens
That’s 4× the token cost for less semantic richness.
Our new agentic friends have many capabilities, chewing structured data not among them.
questdb.com/blog/why-ai-...
Why AI needs a database | QuestDB
AI won't replace databases — but it will transform how we use them. This article explores why AI and databases work better together, breaking down LLM tokenization, real-time data access, and…
questdb.com
May 14, 2025 at 5:04 PM
Structured data is very sneaky!
Just ask your favourite LLM.
1GB of text = ~250M tokens
1GB of structured trades = ~1B tokens
That’s 4× the token cost for less semantic richness.
Our new agentic friends have many capabilities, chewing structured data not among them.
questdb.com/blog/why-ai-...
Just ask your favourite LLM.
1GB of text = ~250M tokens
1GB of structured trades = ~1B tokens
That’s 4× the token cost for less semantic richness.
Our new agentic friends have many capabilities, chewing structured data not among them.
questdb.com/blog/why-ai-...
After some minor technical difficulties we are back for the second talk of @czjug.bsky.social and #KBTechMeet with Haoyi Li talking about (possibly) better future for java build tools.
May 14, 2025 at 5:47 PM
After some minor technical difficulties we are back for the second talk of @czjug.bsky.social and #KBTechMeet with Haoyi Li talking about (possibly) better future for java build tools.
Another @czjug.bsky.social in progress together with #KBTechMeet. Starting with Jirka Pinkas and his talk about DDD.
May 14, 2025 at 4:19 PM
Another @czjug.bsky.social in progress together with #KBTechMeet. Starting with Jirka Pinkas and his talk about DDD.
Interesting move and a new study programme from @vut.cz. Right target audience and decent course composition, the price is IMHO also very acceptable. Although some legislature/law centric courses should be mandatory. Good direction overall!
www.utko.fekt.vut.cz/master-scien...
www.utko.fekt.vut.cz/master-scien...
proCyber - profesní vzdělávání v kybernetické bezpečnosti
Posuňte svou kariéru v kybernetické bezpečnosti na novou úroveň s proCyber!
www.utko.fekt.vut.cz
May 2, 2025 at 1:31 PM
Interesting move and a new study programme from @vut.cz. Right target audience and decent course composition, the price is IMHO also very acceptable. Although some legislature/law centric courses should be mandatory. Good direction overall!
www.utko.fekt.vut.cz/master-scien...
www.utko.fekt.vut.cz/master-scien...
For the next event @czjug.bsky.social is partnering with Komerční banka and #KBTechMeet. There will be TWO talks 🎉
- Haoyi Li: 🎤 Java ☕ build tools and their potential for improvement 🚀
- Jirka Pinkas: 🎤 Advantages of Domain Driven Design 🛠️
www.meetup.com/czjug-prague...
- Haoyi Li: 🎤 Java ☕ build tools and their potential for improvement 🚀
- Jirka Pinkas: 🎤 Advantages of Domain Driven Design 🛠️
www.meetup.com/czjug-prague...
CZJUG on tour & KB TechMeet: Engineering a better Java Build Tool Experience, Wed, May 14, 2025, 6:00 PM | Meetup
This time we are partnering with [KB Tech Meet](https://techmeet.kb.cz/) to bring you even more Java related talks! There will be two Talks
**1\. Domain\-Driven Design \(J
www.meetup.com
May 2, 2025 at 9:48 AM
For the next event @czjug.bsky.social is partnering with Komerční banka and #KBTechMeet. There will be TWO talks 🎉
- Haoyi Li: 🎤 Java ☕ build tools and their potential for improvement 🚀
- Jirka Pinkas: 🎤 Advantages of Domain Driven Design 🛠️
www.meetup.com/czjug-prague...
- Haoyi Li: 🎤 Java ☕ build tools and their potential for improvement 🚀
- Jirka Pinkas: 🎤 Advantages of Domain Driven Design 🛠️
www.meetup.com/czjug-prague...
Peter Malina talking about agent🤖 development in Go with Genkit @ #gophercamp #Brno
April 25, 2025 at 7:48 AM
Peter Malina talking about agent🤖 development in Go with Genkit @ #gophercamp #Brno
Martin Ladecký walking us through the development of #Loono ‘s Preventivka app 📱 at yet another @czjug.bsky.social meetup ☕️. This time hosted by Commerzbank Czech Republic .
Thank you 🙏🎉
Thank you 🙏🎉
April 22, 2025 at 4:29 PM
Martin Ladecký walking us through the development of #Loono ‘s Preventivka app 📱 at yet another @czjug.bsky.social meetup ☕️. This time hosted by Commerzbank Czech Republic .
Thank you 🙏🎉
Thank you 🙏🎉
Reposted by Jakub Čecháček
Yay! We are now part of the @commonhaus.org family! kroxylicious.io/commonhaus/2...
Kroxylicious joins the Commonhaus foundation
The Kroxylicious team are pleased to announce the project is now part of the Commonhaus foundation. We believe this is an important step in providing a stable basis for you, our community, to build ar...
kroxylicious.io
April 22, 2025 at 8:53 AM
Yay! We are now part of the @commonhaus.org family! kroxylicious.io/commonhaus/2...
So looking forward to this... IMHO This will be a fresh wind for Kafka adoption
aiven.io/blog/diskles...
aiven.io/blog/diskles...
Diskless Kafka: 80% Leaner, 100% Open
Apache Kafka® KIP-1150 introduces opt‑in Diskless Topics that replicate directly in object storage. Diskless slashes TCO and unlocks instant autoscaling, efficient geo‑replication, and per‑topic laten...
aiven.io
April 21, 2025 at 9:37 PM
So looking forward to this... IMHO This will be a fresh wind for Kafka adoption
aiven.io/blog/diskles...
aiven.io/blog/diskles...