Projects

Selected projects

DuckDB extension

Query Condition Cache bitmap layout

Query Condition Cache

A predicate cache in DuckDB’s filter-pruning path that skips decompression of non-qualifying blocks for repeated analytical queries.

  • 13.8× faster on HDFS_v2
  • Filter-pruning path integration

DuckDB extension

Table Inspector extension architecture

Table Inspector

Storage observability tooling for understanding database file usage, compression efficiency, free blocks, and index reclaiming.

  • 16K+ community downloads
  • Table-level storage analysis

Open source contributions

Open source

DuckDB mark

DuckDB

DuckDB is an analytical in-process SQL database management system.

Open source

Moonlink mark

Moonlink

Moonlink is an Iceberg-native ingestion engine bringing streaming inserts and upserts to your lakehouse. It ingests Postgres CDC, event streams (Kafka), and OTEL into Iceberg without complex maintenance and compaction. Moonlink buffers, caches, and indexes data so Iceberg tables stay read-optimized.

  • GCRA throughput emulation
  • More reliable REST and metadata operations