__Alex Monahan__
@a13x.bsky.social
DuckDB hype man, MotherDucker (I work at MotherDuck!), SQL nut, Pythonista, reluctant JS dev
Phoenix area front end devs, join me at the HalfStack Conference Jan 30th! Use my link for 10% off!
I'll be talking about 200 FPS data viz in your browser on millions of rows. I'm also excited to meet all of you! Don't miss trivia and karaoke afterwards...
ti.to/halfstack/ha...
I'll be talking about 200 FPS data viz in your browser on millions of rows. I'm also excited to meet all of you! Don't miss trivia and karaoke afterwards...
ti.to/halfstack/ha...
HalfStack Phoenix 2026
HalfStack are a series of creative celebrations of JS and web technology. See halfstackconf.com for more details.
ti.to
January 12, 2026 at 5:33 PM
Phoenix area front end devs, join me at the HalfStack Conference Jan 30th! Use my link for 10% off!
I'll be talking about 200 FPS data viz in your browser on millions of rows. I'm also excited to meet all of you! Don't miss trivia and karaoke afterwards...
ti.to/halfstack/ha...
I'll be talking about 200 FPS data viz in your browser on millions of rows. I'm also excited to meet all of you! Don't miss trivia and karaoke afterwards...
ti.to/halfstack/ha...
Planetscale Postgres and MotherDuck are an awesome combo - super easy to add analytics to your existing platform! Get the benefits of HTAP without the compromises
Analytics queries running slow?
PlanetScale now supports pg_duckdb and integrates with the MotherDuck cloud, making your OLAP workloads lightning-fast.
PlanetScale now supports pg_duckdb and integrates with the MotherDuck cloud, making your OLAP workloads lightning-fast.
December 16, 2025 at 8:22 PM
Planetscale Postgres and MotherDuck are an awesome combo - super easy to add analytics to your existing platform! Get the benefits of HTAP without the compromises
Reposted by __Alex Monahan__
Simple OLAP cache based on DuckDB, adding instant speed up for your DuckDB queries.
This is a deep dive into OLAP and Caches, a never-ending (love/hate) story 😃.
This is a deep dive into OLAP and Caches, a never-ending (love/hate) story 😃.
Simplicity of a Database, but the Speed of a Cache: OLAP Caches for DuckDB - MotherDuck Blog
Speed up slow dashboards without adding new infrastructure. Learn how DuckDB's caching extensions can drop query times from minutes to seconds. | Reading time: 18 min read
motherduck.com
December 5, 2025 at 1:15 PM
Simple OLAP cache based on DuckDB, adding instant speed up for your DuckDB queries.
This is a deep dive into OLAP and Caches, a never-ending (love/hate) story 😃.
This is a deep dive into OLAP and Caches, a never-ending (love/hate) story 😃.
Reposted by __Alex Monahan__
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...
Check out the DuckLake roadmap!
What do you think is missing?
There are some very practical features that learn from other table formats, plus some further investment in unique features like data inlining for fast tiny inserts.
ducklake.select/roadmap
What do you think is missing?
There are some very practical features that learn from other table formats, plus some further investment in unique features like data inlining for fast tiny inserts.
ducklake.select/roadmap
Development Roadmap
Development Roadmap Overview The DuckLake project is governed by the non-profit DuckDB Foundation. Planned Features (Last Updated: November 2025) This section lists the features that we plan to work o...
ducklake.select
December 2, 2025 at 2:54 PM
Check out the DuckLake roadmap!
What do you think is missing?
There are some very practical features that learn from other table formats, plus some further investment in unique features like data inlining for fast tiny inserts.
ducklake.select/roadmap
What do you think is missing?
There are some very practical features that learn from other table formats, plus some further investment in unique features like data inlining for fast tiny inserts.
ducklake.select/roadmap
Reposted by __Alex Monahan__
Today's Cloudflare outage has affected the DuckDB documentation site. While it seems to be mostly recovered now, it will take some time until everything stabilizes.
If you need to look things up in the DuckDB documentation now, feel free to use our PDF:
duckdb.github.io/duckdb-docs-...
If you need to look things up in the DuckDB documentation now, feel free to use our PDF:
duckdb.github.io/duckdb-docs-...
duckdb.github.io
November 18, 2025 at 12:39 PM
Today's Cloudflare outage has affected the DuckDB documentation site. While it seems to be mostly recovered now, it will take some time until everything stabilizes.
If you need to look things up in the DuckDB documentation now, feel free to use our PDF:
duckdb.github.io/duckdb-docs-...
If you need to look things up in the DuckDB documentation now, feel free to use our PDF:
duckdb.github.io/duckdb-docs-...
3 options:
- Keep the amazing name Duck Lake
- Get rid of that pesky space and go full DuckLake
- Towny McTownFace
- Keep the amazing name Duck Lake
- Get rid of that pesky space and go full DuckLake
- Towny McTownFace
A small Saskatchewan #town is looking for a new moniker and hoping to get some much-needed funds in the process. The town of #DuckLake, about 80 km northeast of Saskatoon, is accepting expressions of interest for its #NamingRights, with minimum bid set at $10 million.
www.cbc.ca/news/canada/...
www.cbc.ca/news/canada/...
What’s in a name? Sask. town looking to find out by selling naming rights to highest bidder | CBC News
The small Saskatchewan town of Duck Lake could soon bear a new name, after its council voted to move forward with putting the town's permanent naming rights up for sale. Mayor Jason Anderson says he's...
www.cbc.ca
November 1, 2025 at 5:50 PM
3 options:
- Keep the amazing name Duck Lake
- Get rid of that pesky space and go full DuckLake
- Towny McTownFace
- Keep the amazing name Duck Lake
- Get rid of that pesky space and go full DuckLake
- Towny McTownFace
Reposted by __Alex Monahan__
Reposted by __Alex Monahan__
Today's Future Data Systems Seminar Speaker: Jordan Tigani (@jrdntgn.bsky.social) will present how @motherduck.com supports modern workloads with DuckLake. Zoom talk open to public at 4:30pm ET. YouTube video available after: db.cs.cmu.edu/events/futur...
[Future Data] DuckLake: Learning from Cloud Data Warehouses to Build a Robust "Lakehouse" - Carnegie Mellon Database Group
When building scalable data systems, it is easy to focus on the... Read More +
db.cs.cmu.edu
October 6, 2025 at 11:55 AM
Today's Future Data Systems Seminar Speaker: Jordan Tigani (@jrdntgn.bsky.social) will present how @motherduck.com supports modern workloads with DuckLake. Zoom talk open to public at 4:30pm ET. YouTube video available after: db.cs.cmu.edu/events/futur...
Reposted by __Alex Monahan__
Are you streaming into your Lakehouse?
Traditional formats suffered with the “many small files” problem — OLAP engines merge them reactively with long jobs. ⏳
DuckLake takes a proactive path: Data Inlining + async flush to parquet while always keeping data queryable ⚡
Traditional formats suffered with the “many small files” problem — OLAP engines merge them reactively with long jobs. ⏳
DuckLake takes a proactive path: Data Inlining + async flush to parquet while always keeping data queryable ⚡
September 29, 2025 at 2:13 PM
Are you streaming into your Lakehouse?
Traditional formats suffered with the “many small files” problem — OLAP engines merge them reactively with long jobs. ⏳
DuckLake takes a proactive path: Data Inlining + async flush to parquet while always keeping data queryable ⚡
Traditional formats suffered with the “many small files” problem — OLAP engines merge them reactively with long jobs. ⏳
DuckLake takes a proactive path: Data Inlining + async flush to parquet while always keeping data queryable ⚡
Reposted by __Alex Monahan__
How many 6 year old databases get 3x faster sorting??? When it was already world-class??? Amazing stuff from DuckDB!
We published a new deep dive by Laurens Kuiper, who recently redesigned DuckDB's sort.
One data point: ordering the TPC-H SF100 lineitem table with the memory limit set to 30 GB is 3× faster in DuckDB v1.4 than in v1.3.
Read more at duckdb.org/2025/09/24/s...
One data point: ordering the TPC-H SF100 lineitem table with the memory limit set to 30 GB is 3× faster in DuckDB v1.4 than in v1.3.
Read more at duckdb.org/2025/09/24/s...
Redesigning DuckDB's Sort, Again
After four years, we've decided to redesign DuckDB's sort implementation, again. In this post, we present and evaluate the new design.
duckdb.org
September 26, 2025 at 3:54 AM
How many 6 year old databases get 3x faster sorting??? When it was already world-class??? Amazing stuff from DuckDB!
Reposted by __Alex Monahan__
🚀 We released version 0.3 of the DuckLake specification and the DuckDB ducklake extension today. It includes interoperability with Iceberg, support for geometry types and more.
Check the announcement blog for more details ducklake.select/2025/09/17/d...
Check the announcement blog for more details ducklake.select/2025/09/17/d...
September 18, 2025 at 9:20 AM
🚀 We released version 0.3 of the DuckLake specification and the DuckDB ducklake extension today. It includes interoperability with Iceberg, support for geometry types and more.
Check the announcement blog for more details ducklake.select/2025/09/17/d...
Check the announcement blog for more details ducklake.select/2025/09/17/d...
Reposted by __Alex Monahan__
Fall 2025 Seminar Schedule:
Sep 22: Apache Iceberg
Sep 29: Apache Hudi
Oct 06: @motherduck.com
Oct 13: SpiralDB Vortex
Oct 27: @singlestore.com
Nov 03: @deltalakeoss.bsky.social
Nov 10: Mooncake
Nov 17: @firebolthq.bsky.social
Nov 24: @xtdb.com
Dec 01: Apache Polaris
Sep 22: Apache Iceberg
Sep 29: Apache Hudi
Oct 06: @motherduck.com
Oct 13: SpiralDB Vortex
Oct 27: @singlestore.com
Nov 03: @deltalakeoss.bsky.social
Nov 10: Mooncake
Nov 17: @firebolthq.bsky.social
Nov 24: @xtdb.com
Dec 01: Apache Polaris
September 17, 2025 at 11:15 PM
Fall 2025 Seminar Schedule:
Sep 22: Apache Iceberg
Sep 29: Apache Hudi
Oct 06: @motherduck.com
Oct 13: SpiralDB Vortex
Oct 27: @singlestore.com
Nov 03: @deltalakeoss.bsky.social
Nov 10: Mooncake
Nov 17: @firebolthq.bsky.social
Nov 24: @xtdb.com
Dec 01: Apache Polaris
Sep 22: Apache Iceberg
Sep 29: Apache Hudi
Oct 06: @motherduck.com
Oct 13: SpiralDB Vortex
Oct 27: @singlestore.com
Nov 03: @deltalakeoss.bsky.social
Nov 10: Mooncake
Nov 17: @firebolthq.bsky.social
Nov 24: @xtdb.com
Dec 01: Apache Polaris
Reposted by __Alex Monahan__
Such a fun listen on ducklake and duckdb with @hannes.muehleisen.org and @markraasveldt.bsky.social!
Learned a lot, the future of ducklake looks very bright!
overcast.fm/+AAH1YOLrL6Q
Learned a lot, the future of ducklake looks very bright!
overcast.fm/+AAH1YOLrL6Q
Duck Lake: Simplifying the Lakehouse Ecosystem — Data Engineering Podcast
overcast.fm
September 12, 2025 at 11:42 PM
Such a fun listen on ducklake and duckdb with @hannes.muehleisen.org and @markraasveldt.bsky.social!
Learned a lot, the future of ducklake looks very bright!
overcast.fm/+AAH1YOLrL6Q
Learned a lot, the future of ducklake looks very bright!
overcast.fm/+AAH1YOLrL6Q
Reposted by __Alex Monahan__
Excited to be a keynote speaker at PyData Amsterdam 2025 (September 24–26). My talk is titled 'Minus Three Tier: Data Architecture Turned Upside Down'.
Use code PYDATADB10 for 10% off tickets
amsterdam.pydata.org/conference
#PDAmsterdam2025 #10YearsPDAmsterdam
Use code PYDATADB10 for 10% off tickets
amsterdam.pydata.org/conference
#PDAmsterdam2025 #10YearsPDAmsterdam
September 10, 2025 at 1:38 PM
Excited to be a keynote speaker at PyData Amsterdam 2025 (September 24–26). My talk is titled 'Minus Three Tier: Data Architecture Turned Upside Down'.
Use code PYDATADB10 for 10% off tickets
amsterdam.pydata.org/conference
#PDAmsterdam2025 #10YearsPDAmsterdam
Use code PYDATADB10 for 10% off tickets
amsterdam.pydata.org/conference
#PDAmsterdam2025 #10YearsPDAmsterdam
Reposted by __Alex Monahan__
I've been leading the data infrastructure efforts at my job (I used to work as a Data Engineer in big tech) and the stack we've landed on is so enjoyable to work with.
@dagster.io - Orchestration
@duckdb.org - Database
@motherduck.com - Data Warehouse/storage
DBT - Data modeling
@dagster.io - Orchestration
@duckdb.org - Database
@motherduck.com - Data Warehouse/storage
DBT - Data modeling
September 5, 2025 at 3:00 PM
I've been leading the data infrastructure efforts at my job (I used to work as a Data Engineer in big tech) and the stack we've landed on is so enjoyable to work with.
@dagster.io - Orchestration
@duckdb.org - Database
@motherduck.com - Data Warehouse/storage
DBT - Data modeling
@dagster.io - Orchestration
@duckdb.org - Database
@motherduck.com - Data Warehouse/storage
DBT - Data modeling
Reposted by __Alex Monahan__
Laurens Kuiper from @duckdb.org presented DuckDB's new memory assignment policy to run multi-join pipelines out-of-core with gracious performance degradation when join hash tables increasingly do not fit in RAM.
A well-attended and -delivered talk!
paper: vldb.org/pvldb/vol18/p2748-kuiper.pdf
A well-attended and -delivered talk!
paper: vldb.org/pvldb/vol18/p2748-kuiper.pdf
September 4, 2025 at 2:01 PM
Laurens Kuiper from @duckdb.org presented DuckDB's new memory assignment policy to run multi-join pipelines out-of-core with gracious performance degradation when join hash tables increasingly do not fit in RAM.
A well-attended and -delivered talk!
paper: vldb.org/pvldb/vol18/p2748-kuiper.pdf
A well-attended and -delivered talk!
paper: vldb.org/pvldb/vol18/p2748-kuiper.pdf
Reposted by __Alex Monahan__
Bad news: we had to postpone today's episode.
Good news: @tylerhillery.com has a great blog entry that features some of the Oxide and Friends back catalog you might have missed!
Good news: @tylerhillery.com has a great blog entry that features some of the Oxide and Friends back catalog you might have missed!
I wrote about why I believe the Oxide and Friends podcast will have a greater impact on their mission to change computing forever than their rack scale computer
tylerhillery.com/blog/oxide-a...
tylerhillery.com/blog/oxide-a...
August 28, 2025 at 12:24 AM
Bad news: we had to postpone today's episode.
Good news: @tylerhillery.com has a great blog entry that features some of the Oxide and Friends back catalog you might have missed!
Good news: @tylerhillery.com has a great blog entry that features some of the Oxide and Friends back catalog you might have missed!
"GROUP BY ALL" was added to Oracle! Friendlier SQL to the rescue!
‼️ #Oracle #Database 23.9 brings some really cool #Developer features to the table:
😎 GROUP BY ALL
🥇 Non-positional INSERT statements - first and only database to support this
🔢 UUIDv4
And more!
Definitely check it out 👇
😎 GROUP BY ALL
🥇 Non-positional INSERT statements - first and only database to support this
🔢 UUIDv4
And more!
Definitely check it out 👇
What’s new for Developers in Oracle Database 23.9
For more information on what's new in Oracle Database 23.8, see: What's new for Developers in 23.8 Oracle Database 23.9 has been my favorite RU so far. The features introduced in 23.9 are some of those that we had long had on our list, but simply took a while to get to and to get right. The Non-Positional INSERT INTO…
www.geraldonit.com
August 15, 2025 at 11:10 PM
"GROUP BY ALL" was added to Oracle! Friendlier SQL to the rescue!
Reposted by __Alex Monahan__
🔥 DuckDB is featured in @fireship.bsky.social's “100 seconds” series:
🚀 www.youtube.com/watch?v=uHm6...
🚀 www.youtube.com/watch?v=uHm6...
DuckDB in 100 Seconds
YouTube video by Fireship
www.youtube.com
August 14, 2025 at 9:37 PM
🔥 DuckDB is featured in @fireship.bsky.social's “100 seconds” series:
🚀 www.youtube.com/watch?v=uHm6...
🚀 www.youtube.com/watch?v=uHm6...
DuckDB may have an adorable mascot, but this is serious DB tech! As a larger-than-memory system, data durability is critical!
I went through DuckDB's WAL, and it does everything I was asking for in my blog post:
1. Per record checksum
2. Explicit error on checksum failure
3. Configurable behavior
4. Partial recovery
5. Safe truncation of the WAL only when WAL contents are checkpointed
1. Per record checksum
2. Explicit error on checksum failure
3. Configurable behavior
4. Partial recovery
5. Safe truncation of the WAL only when WAL contents are checkpointed
August 10, 2025 at 3:03 PM
DuckDB may have an adorable mascot, but this is serious DB tech! As a larger-than-memory system, data durability is critical!
Reposted by __Alex Monahan__
I went through DuckDB's WAL, and it does everything I was asking for in my blog post:
1. Per record checksum
2. Explicit error on checksum failure
3. Configurable behavior
4. Partial recovery
5. Safe truncation of the WAL only when WAL contents are checkpointed
1. Per record checksum
2. Explicit error on checksum failure
3. Configurable behavior
4. Partial recovery
5. Safe truncation of the WAL only when WAL contents are checkpointed
August 10, 2025 at 11:30 AM
I went through DuckDB's WAL, and it does everything I was asking for in my blog post:
1. Per record checksum
2. Explicit error on checksum failure
3. Configurable behavior
4. Partial recovery
5. Safe truncation of the WAL only when WAL contents are checkpointed
1. Per record checksum
2. Explicit error on checksum failure
3. Configurable behavior
4. Partial recovery
5. Safe truncation of the WAL only when WAL contents are checkpointed
Reposted by __Alex Monahan__
We just published a deep dive on spatial joins in DuckDB by @maxxen.bsky.social.
In this blog post, Max explains how spatial joins evolved in DuckDB and how the current operator harnesses R-Trees.
Read the full post at duckdb.org/2025/08/08/s...
In this blog post, Max explains how spatial joins evolved in DuckDB and how the current operator harnesses R-Trees.
Read the full post at duckdb.org/2025/08/08/s...
August 8, 2025 at 3:24 PM
We just published a deep dive on spatial joins in DuckDB by @maxxen.bsky.social.
In this blog post, Max explains how spatial joins evolved in DuckDB and how the current operator harnesses R-Trees.
Read the full post at duckdb.org/2025/08/08/s...
In this blog post, Max explains how spatial joins evolved in DuckDB and how the current operator harnesses R-Trees.
Read the full post at duckdb.org/2025/08/08/s...
Reposted by __Alex Monahan__
#SD25 online continues tomorrow!
Join Cpt. @hannes.muehleisen.org for his talk on DuckLake
Aug 4 at 10am PT / 1pm ET / 7pm CET
www.youtube.com/watch?v=YQEU...
Join Cpt. @hannes.muehleisen.org for his talk on DuckLake
Aug 4 at 10am PT / 1pm ET / 7pm CET
www.youtube.com/watch?v=YQEU...
August 3, 2025 at 2:15 PM
#SD25 online continues tomorrow!
Join Cpt. @hannes.muehleisen.org for his talk on DuckLake
Aug 4 at 10am PT / 1pm ET / 7pm CET
www.youtube.com/watch?v=YQEU...
Join Cpt. @hannes.muehleisen.org for his talk on DuckLake
Aug 4 at 10am PT / 1pm ET / 7pm CET
www.youtube.com/watch?v=YQEU...