775 tutorials · free to read

A working handbook for data and software engineering.

Hands-on tutorials by Alex Merced on Apache Iceberg, the data lakehouse, pipelines, agentic AI, and the languages and tools that hold it all together.

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  1. 01Deleting User Data From an Immutable Lakehouse: GDPR Hard Deletes on IcebergHow to turn a logical delete on immutable Iceberg into a physical erasure across snapshots, versions, replicas, and downstream copies.
  2. 02Default Column Values and Field IDs: How Iceberg Schema Evolution Works at the Spec LevelHow field IDs and initial and write defaults let Iceberg change schemas on large tables without rewriting data, at the spec level.
  3. 03The Iceberg Table Properties That Actually MatterThe Iceberg table properties that decide file count, pruning, write amplification, retention, and metadata growth, by workload.
  4. 04Geospatial Data in Apache Iceberg: Geometry, Geography, and GeoParquetHow Iceberg v3 geometry and geography types, bounding boxes, and native Parquet types give spatial data first-class standing.
  5. 05Inside the Puffin File FormatThe Puffin file format inside out, byte by byte, covering Theta sketches for distinct values and deletion vectors.
  6. 06Local Iceberg Development Environments: Docker, MinIO, and In-Memory Catalogs for CILocal Iceberg development environments: in-process catalogs, a Docker Compose stack with MinIO, and CI configurations that run either.