Rusty Conover — rusty.today

The companion to my post on DuckDB upgrade speed.

Nine months of telemetry from Query.Farm's DuckDB extensions — 110 million loads — show each release landing slower than the one before it.

You have a large Parquet file and an API that has to return its contents, but responses have a size ceiling, so the caller pages through it.

When DuckDB ships a new version, every community extension has to be rebuilt against it before anyone can install one.

A DuckDB extension that compiles for WebAssembly has only proven that it compiles.

Quack — the new client/server protocol extension for DuckDB — was announced today.

A working status page for the Arrow-related issues and PRs I've filed against duckdb/duckdb — the UNION saga, schema/data disagreements in nested appenders, type fidelity through round-trips, and the bigger question of how defensive the C Data Interface s…

A detailed comparison of GeoSilo's delta-integer encoding against GeoArrow's columnar float64 layout with Parquet BYTE_STREAM_SPLIT, covering compression ratios, precision tradeoffs, and when each approach wins.

I needed a self-contained binary that downloads a program over HTTPS and exec's it — small enough to run in a FROM scratch container with nothing else.

A survey of the TIME data type across 14 databases, comparing supported ranges, maximum values, and whether the special value 24:00:00 is accepted.

I open-sourced the telemetry client I use across Query.Farm's DuckDB extensions.

I built an RPC framework for Python that uses Apache Arrow IPC as the wire format and Python Protocol classes as the interface definition.

The Inflector extension for DuckDB now supports configurable acronyms, so case conversions preserve terms like HTML, API, and URL as fully uppercase — configured through a native DuckDB setting.

Fair Weather scores every hour of the next 48 hours on a 0–100 scale based on temperature, humidity, wind, UV, precipitation, air quality, and daylight —...

If you've ever wanted to extend DuckDB with custom functions, table functions, or new capabilities — this is your chance to learn how.

We’re excited to introduce our newest DuckDB community extension: ADBC Scanner — a fast, flexible way to connect DuckDB to external databases using Arrow...

Since I live on the U.S.

I’ll be teaching a free, 2-hour workshop about DuckDB extension development the morning of DuckDB Developer Day. 📅 Date: January 30, 2026 📍 Location:...

I'm excited to share today’s release of the crypto extension, bringing improvements and new capabilities: Updated crypto_hash API – This function now...

For everyone building on the Airport extension for DuckDB https://airport.query.farm/ - there is now support for Go from Vladimir Gribanov. airport-go — a Go...

🆕 Created a Kafka topic with 8 partitions on my M3 MacBook Air (one per core) ⚡ Inserted 50M messages from DuckDB (47 bytes each) in 11.62s (4.3 million...

Transform and query JSON data with elegant expressions—all within SQL.

I’m trying to get our DuckDB extensions fully indexed in Google so users can more easily discover what we’re building — especially all the tools that make...

Transform string cases and inflect column names directly in SQL—no more wrestling with naming conventions across your data pipeline.

I’ve been working on integrating DuckDB with Apache Kafka, and now you can read from and write to Kafka topics using the SQL you already know.

#DuckDB Developer Meeting 2026, hosted by DuckDB Labs will be on January 30, 2026, in #Amsterdam.

I am happy to introduce the MiniJinja Extension for DuckDB, brought to you by Query.Farm!

We've just released a powerful new community extension that brings JSON schema validation and data enrichment directly to your SQL queries.

Now you can bring powerful template rendering directly into your SQL queries.

Here are some of the highlights with my commentary - 🧩 Extensions ◆ Updated C API + C extension API - this means extensions will have a stable API build...

I’ll be presenting: “Building on Flight: Real-World Lessons from the DuckDB Airport Extension” I'm excited to reconnect with the Arrow community.

👉 Just set your dialect with the dialectic_flavor PRAGMA.

The team at yeet.cx has built an observability platform that makes clever use of DuckDB Wasm together with our Textplot DuckDB extension.

We talked about why DuckDB’s in-process, C++-based architecture is changing how people think about data systems, and we dug into the ecosystem that’s...

But when I'm dealing with optimization, I'm always left with that feeling, did I find a local or global minima?

I am excited to announce Query.Farm is expanding!

How to use Python generators and Apache Arrow's RecordBatchReader to stream large datasets into DuckDB without loading everything into memory at once.

If you’ve used DuckDB with Pandas, you know how easy it is to query DataFrames directly.

Create stunning bar charts, density plots, and sparklines without leaving DuckDB.

Excited to share the stochastic extension - bringing comprehensive statistical distributions directly to DuckDB SQL!

The RapidFuzz extension is now available as a DuckDB Community Extension!

Just launched a DuckDB Community Extension that brings high-performance probabilistic approximate membership filters to SQL!

🚀 New DuckDB Marisa Extension by Query.Farm Add fast, space-efficient 🧠 MARISA trie support to DuckDB for string lookups, autocomplete 🔍, prefix...

Whether you’re working on database indexing, data partitioning, caching, or implementing Bloom filters, hashfuncs offers fast and reliable hashing optimized...

🔍 We tested scalar functions, remote table creation, and selection queries using both BIGINT and 32-byte strings — scaling up to 100 million rows.

I’ve been blown away by the enthusiasm and curiosity around Airport (https://airport.query.farm), our DuckDB extension that brings the power of Arrow Flight...

🛫 Airport lets DuckDB use Arrow Flight, unlocking new ways to query remote data seamlessly and quickly. ✨ Bonus: the demo includes built-in UTF-8 tests,...

The Tributary extension by Query.Farm — enables real-time querying and analysis of Kafka streams directly in DuckDB.

Extension availability across versions and platforms isn’t always obvious—and the docs don’t always have the answers.

I'm excited to launch Radio, a new DuckDB extension that enables real-time interaction with event-driven systems like WebSocket and Redis Pub/Sub.