writing

notes on data engineering, open-source tools, and research

Lineage Is a Graph Problem: Tracing Revenue to Raw Data With PuppyGraph

Testing MotherDuck for Concurrent FHIR Analytics over S3 Parquet

Postgres to ClickHouse CDC for Trade Surveillance

Firebolt, Trino, and Iceberg Pruning Internals

Auditing XTable-Generated Iceberg Metadata in Firebolt

One Row Changed in Hudi. The Vector Index Resynced Itself.

The AI Didn't Hallucinate. The Data Did.

ClickHouse vs DuckDB on Real FHIR Data: What the Benchmark Actually Shows

Connecting LanceDB to PuppyGraph: Building the Proxy That Should Not Exist

I Built a Snowflake Query Savings Estimator (Inspired by Greybeam)

PuppyGraph: Graph Analytics Without the Overhead

FHIR to Parquet: 39x Faster Queries on Healthcare Data