Marco Slot
@marcoslot.com
Mostly posts about PostgreSQL, Snowflake Postgres, and PostgreSQL extensions. Formerly Crunchy Data, Microsoft, Citus Data, AWS, TCD, VU
Next Tuesday @marcoslot.com will be at Postgres Meetup for * to talk about pg_lake - #Postgres for #Iceberg with #DuckDB. Join us! www.meetup.com/postgres-mee...
Postgres for the lakehouse: pg_lake, Tue, Jan 13, 2026, 12:00 PM | Meetup
Marco Slot will be here this month to talk about the new extension pg_lake that connects Postgres to lakehouse and object storage - for Iceberg, Parquet, csv and more. As
meetup.com
pg_lake just went open source! (Apache 2.0) pg_lake is a set of extensions (from Crunchy Data Warehouse) that add comprehensive Iceberg support and data lake access to Postgres, with @duckdb.org transparently integrated into the query engine. Announcement blog: www.snowflake.com/en/engineeri...
No system hits the sweet spot of allowing for extensibility while maintaining systems safety. It would be nice if there was a standard plugin API (think POSIX) that allows compatibility across systems. Thanks to @marcoslot.com + @daveandersen.bsky.social for their collaboration on this project
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.
PVLDB@pvldb.bsky.social · last yr.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
Five years ago I joined @crunchydata.com, shortly after I wrote about having unfinished business with Postgres. Today as part of Snowflake that journey is continuing. We've built some amazing things, but are just getting started. www.crunchydata.com/blog/crunchy...
Crunchy Data Joins Snowflake | Crunchy Data Blog
We are excited to announce that Crunchy Data is joining Snowflake to bring Postgres to the AI Data Cloud.
crunchydata.com
Generative AI comes up with details that would be hilarious, if it wasn't so mind boggling that it can come up with these details.
And there it is: Native logical replication from any Postgres server to Iceberg managed by Crunchy Data Warehouse. Speed up Postgres analytical queries 100x with 2 commands.
Crunchy Data@crunchydata.com · last yr.Today we're announcing the availability of logical replication from Postgres to Iceberg with Crunchy Data Warehouse. Now you can seamlessly move data and stream changes from your operational database into an analytical system. www.crunchydata.com/blog/logical...
I gave a talk at the inaugural (and awesome) European Iceberg meetup in Amsterdam last night. It's an introduction to how and why we used Iceberg and DuckDB to build a Postgres Data Warehouse: www.youtube.com/watch?v=cEnq...
Building a Postgres Data Warehouse with Iceberg
YouTube video by Apache Iceberg™ Meetup
youtube.com
Move fast and build solid solutions that work across platforms. You can now use Postgres as a modern Data Warehouse anywhere, using any S3-compatible storage API. Query, import, or export files in your data lake or store data in Iceberg with automatic maintenance and very fast queries.
Crunchy Data@crunchydata.com · last yr.Excited to announce Crunchy Data Warehouse is now available for Kubernetes and On-premises. Need faster analytics from Postgres? Want a native Postgres data lake experience? Learn more about how it works: www.crunchydata.com/blog/crunchy...
Excited to announce Crunchy Data Warehouse is now available for Kubernetes and On-premises. Need faster analytics from Postgres? Want a native Postgres data lake experience? Learn more about how it works: www.crunchydata.com/blog/crunchy...
Crunchy Data Warehouse: Postgres with Iceberg Available for Kubernetes and On-premises | Crunchy Data Blog
Crunchy Data brings Postgres-native Apache Iceberg to Kubernetes and on-prem workloads.
crunchydata.com
We weren't really thinking of log management as a target use case, but Iceberg is ideal as the final destination for logs, and having transactions & built-in job scheduling & a fast query engine (& laser focus on developer experience) makes things really simple and cost-effective.
Craig@craigkerstiens.com · last yr.I got a number of questions on how we saved $30k a month on cloudwatch by moving logs directly to S3/Iceberg with Postgres so I wrote up how in a bit more detail - www.crunchydata.com/blog/reducin...
I got a number of questions on how we saved $30k a month on cloudwatch by moving logs directly to S3/Iceberg with Postgres so I wrote up how in a bit more detail - www.crunchydata.com/blog/reducin...
Reducing Cloud Spend: Migrating Logs from CloudWatch to Iceberg with Postgres | Crunchy Data Blog
How we migrated our internal logging for our database as a service, Crunchy Bridge, from CloudWatch to S3 with Iceberg and Postgres. The result was simplified logging management, better access with SQ...
crunchydata.com
Excited to announce built-in maintenance for Iceberg via Postgres. Now within Crunchy Data Warehouse we will automatically vacuum and continuously optimize your Iceberg data by compacting and cleaning up files. Dig into the details of how this works www.crunchydata.com/blog/automat...
Automatic Iceberg Maintenance Within Postgres | Crunchy Data Blog
Iceberg can create orphan files during snapshot changes or transaction rollbacks. Crunchy Data Warehouse automatically cleans up the orphan files using a new autovacuum feature.
crunchydata.com
Imagine your potential customer as a serious company doing serious things, and willing to pay serious money if you can genuinely help them run their business without causing lot of new problems. Then go build products for that customer. This works.
Auto-vacuum for #Iceberg tables is now available in Crunchy Data Warehouse! We're always aiming for a 0-touch experience where possible, so we went out of our way to make Iceberg compaction & cleanup fully automatic without any configuration. Still pretty interesting to see a manual vacuum:
A big part of building Crunchy Data Warehouse was ease of use. How easy is it to load data from existing public datasets? Step 1: Point at your dataset and we'll load it for you Step 2: Query it Step 3: Profit
ChatGPT Plus had a good run, but looks like Le Chat is going to be my main assistant now. I like that it's fast, to the point, and quite clever. I was impressed with a SQL query it came up with today for finding contiguous ranges of integers. ChatGPT's version was 3x slower.
Postgres is increasingly becoming a versatile data platform, instead of just an operational database. Using pg_parquet you can trivially export data to S3, and using Crunchy Data Warehouse you can just as easily query or import Parquet files from PostgreSQL.
Deepseek R1 in an ollama "container app" on a managed Postgres server, because... why not?
5 years from now, no one's going to want slower, less reliable, or harder to use databases.
🎉 pg_documentdb is open source I created the initial version with Vinod Sridharan (an absolutely brilliant engineer) at Microsoft a few years ago and it's come a long way since. It reimplements Mongo API with exact semantics in PostgreSQL. Already used by FerretDB! github.com/microsoft/do...
GitHub - microsoft/documentdb: DocumentDB offers a native implementation of document-oriented NoSQL database, enabling seamless CRUD operations on BSON data types within a PostgreSQL framework.
DocumentDB offers a native implementation of document-oriented NoSQL database, enabling seamless CRUD operations on BSON data types within a PostgreSQL framework. - microsoft/documentdb
github.com
Impressed by the latest ParadeDB release. Solving the right problems in the right way is really hard.
ParadeDB@paradedb.com · 2y agoParadeDB is now integrated with Postgres block storage. Today, we are releasing Part 1 of our 3-part blog series on how we designed a new storage mechanism for search and analytics in Postgres. www.paradedb.com/blog/block_s...
1/11. ParadeDB is now integrated with Postgres block storage. As far as we know, no one has integrated a search and analytics engine with Postgres storage before. This is a big deal. Here's why we did it, how we did it, and why you should care. 🧵
ParadeDB@paradedb.com · 2y agoParadeDB is now integrated with Postgres block storage. Today, we are releasing Part 1 of our 3-part blog series on how we designed a new storage mechanism for search and analytics in Postgres. www.paradedb.com/blog/block_s...
A lot of great recommendations on tuning PostgreSQL for analytical queries by @karenhjex.bsky.social www.crunchydata.com/blog/postgre...
Postgres Tuning & Performance for Analytics Data | Crunchy Data Blog
Karen digs into Postgres strategies for working with large analytical data sets. She reviews tuning, strategies for pre-compiling data, and other analytics systems.
crunchydata.com
If you've become your company's designated Postgres expert, learning to navigate Postgres source code can be a useful skill, even if you're not a C programmer. For instance, the docs do not specify how the optimizer works, but there is a detailed readme in the source: github.com/postgres/pos...
postgres/src/backend/optimizer at master · postgres/postgres
Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Subm...
github.com
Buckle up because we're banging into the new year with my annual retrospective of the last year in databases! Highlights include license change blowback, Databricks vs. Snowflake gangwar, @duckdb.org's shotgun weddings, and buying a quarterback to impress your lover: www.cs.cmu.edu/~pavlo/blog/...
Databases in 2024: A Year in Review
Andy rises from the ashes of his dead startup and discusses what happened in 2024 in the database game.
cs.cmu.edu
In the piece I cover: - the partnership between @cncf.io and Andela - the release of Akamai App Platform cc/ @mikemaney.bsky.social - the rebranding of Akka - the partnership between @gitlab.com and AWS - the release of Crunchy Data Warehouse cc/ @craigkerstiens.com @crunchydata.com
Woot, woot, #Debezium 3.0.5 is out, which amongst other things also contains my patch for adding support for #Postgres 17 failover slots 🥳. You now can fail over your Debezium CDC connector to a replica turned primary, without missing any events! debezium.io/blog/2024/12...
Debezium 3.0.5.Final Released
Debezium is an open source distributed platform for change data capture. Start it up, point it at your databases, and your apps can start responding to all of the inserts, updates, and deletes that ot...
debezium.io
