__Alex Monahan__

Phoenix HalfStack Conference - DuckDB Wasm & Mosaic Wait, is that 10 million rows?

Slides are here! docs.google.com/presentation...

I had a great time at @halfstackconf.bsky.social! Check out my slides to build lightning fast data viz on millions of rows with Mosaic and DuckDB-Wasm!

It was great to get to know more of the Phoenix dev community and I picked up some new ideas around AI as well.

#halfstack

HalfStack Phoenix 2026 HalfStack are a series of creative celebrations of JS and web technology. See halfstackconf.com for more details.

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...

Tron soundtrack is goated in my book. Remix is awesome too

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

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

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 😃.

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.

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...

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...

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

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-...

3 options:
- Keep the amazing name Duck Lake
- Get rid of that pesky space and go full DuckLake
- Towny McTownFace

Bird names are the real mvp, no bias here

YouTube video by CMU Database Group DuckLake: Learning from Cloud Data Warehouses to Build a Robust “Lakehouse” (Jordan Tigani)

#duckdb #ducklake #cmu www.youtube.com/watch?v=z2Gh...

[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 +

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...

Maybe a checksum repository would be enough?

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 ⚡

I think we might all perish....

Small Data Small Data Small data appears to be a very exciting movement that is moving the overton window away from Big Data onto much simpler and cheaper solutions ...

when I say “storage is cheaper now” this is what I mean

topicpartition.io/definitions/...

How's the async io boost looking?

Welcome to the flock!!!

How many 6 year old databases get 3x faster sorting??? When it was already world-class??? Amazing stuff from DuckDB!

It me

🚀 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...

Future Data Systems Seminar Schedule (Fall 2025)

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

Duck Lake: Simplifying the Lakehouse Ecosystem — Data Engineering Podcast

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

Is says "This is satire" in very fine print all the way at the bottom

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

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

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

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!

Thank you, I really appreciate it!!